1. https://data.geoscience.fr/ncl
  2. FAIR-Incubator-PEPR-Sous-sol
  3. _GeolTsBound
experimental

Register: Chronostratigraphical / geochronological boundaries

URI: https://data.geoscience.fr/ncl/FAIR-Incubator-PEPR-Sous-sol/GeolTsBound

This register contains the geological timescale boundaries.

Core metadata

is a Container | Collection | Register
owned by 3
changed on 31 Oct 2024 10:18:50.057
submitted byCorentin Follenfant
accepted on 30 Oct 2024 14:10:24.646

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description This register contains the geological timescale boundaries.
label Chronostratigraphical / geochronological boundaries
member Base of Holkerian | End of Volgian | Base of Telychian | Base of Botomian | Base of Holsteinian | Base of Gunz | Base of Virgulian | Base of GS-2.1a | Base of Upper Coniacian | End of Middle Weichselian | Base of GI-7c | Base of GI-1a | Base of Thanetian | Base of GS-21.1 | Base of Olenekian | Base of Upper Pleniglacial | Base of Jurassic | Base of Upper Cenomanian | Base of GS-24.2 | Base of Upper Tournaisian | Base of Ordovician | Base of Llanvirn | Base of Middle Callovian | End of Savignean | Base of Tiglian | End of Holkerian | Base of Subatlantic | Base of GI-14d | Base of Savignean | Base of Wenlock | Base of Sequanian | End of Lower Carnian | End of Caradoc | End of Urgonian (Jura) | Base of Series2 | Base of Alaunian | Base of GI-7b | Base of Purbeckian | Base of Middle Cenomanian | Base of Emilian | Base of Late Glacial | Base of Cromerian I | Base of Valanginian | Base of Mindel | Base of GS-17.2 | Base of Middle Bathonian | End of Neuzivian | Base of GI-13a | Base of Westphalian D | Base of Middle Santonian | Base of GI-22d | End of Villafranchian | Base of Precambrian | Base of GS-16.2 | Base of Middle Triassic | End of Eemian | Base of Priabonian | Base of Upper Lochkovian | Base of Purbecko-wealdian | Base of Sicilian | End of Lower Ladinian | Base of Redonian | Base of Barremian | Base of GI-17.1c | Base of Mindel/Riss Interglacial | Base of Ivorian | Base of Older Dryas | Base of GS-12 | Base of GI-22c | Base of Drenthe | Base of Pridoli | Base of GI-2.2 | Base of Middle Campanian | End of Bedoulian | Base of Mesozoic | Base of Upper Aptian | End of Tongrian | Base of Oligocene | Base of Pragian | Base of Cryogenian | Base of Upper Givetian | End of Holsteinian | End of Rognacian | Base of GI-14b | Base of GS-20 | Base of GI-20b | Base of Kungurian | Base of Middle Mississippian | End of Bavelian | Base of GI-24.1b | Base of Wurm | End of Villersian | Base of GI-11 | Base of Montian | End of Lacian | Base of Cretaceous | Base of GS-2.2 | Base of Saale/Warthe | Base of Upper Kimmeridgian | Base of Upper Campanian | Base of Guadalupian | ...
membership predicate member
modified 31 Oct 2024 10:18:50.057
notation GeolTsBound
owner 3
type Container | Collection | Register
version info 3
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Contents

Name Notation Description Types Status
Base of Upper Ladinian 008c37c0-394a-4dc8-8824-dd4c1ba38554 Concept , era boundary , geochronologic boundary experimental
End of Villafranchian 00a28a4a-8afc-4b20-a84c-08eb6e67992f era boundary , Concept , geochronologic boundary experimental
Base of Assian 01439c72-1b62-43e7-ac2d-6dbf45a07701 Concept , era boundary , geochronologic boundary experimental
Base of GI-22b 024c28a7-9e9d-4f26-b442-cb7495f09c8c geochronologic boundary , era boundary , Concept experimental
Base of Upper Aptian 0368669a-5c2d-478f-8c50-799d9cc19aeb Concept , geochronologic boundary , era boundary experimental
Base of GI-12a 03ef73a8-fd60-4b7b-a4b6-82218493d3de era boundary , geochronologic boundary , Concept experimental
Base of Bajocian 044ab5d8-68f8-4cff-9c38-2bc24f1cba07 geochronologic boundary , Concept , era boundary experimental
Base of Upper Villafranchian 04538257-c8fa-4545-ab89-745b33a8514f Concept , era boundary , geochronologic boundary experimental
Base of Lutetian 048e0915-fcfd-475a-8d3d-058ebeed4801 Concept , era boundary , geochronologic boundary experimental
Base of Würm I 05217536-b8bd-48ca-a363-601dfb413d1a Concept , geochronologic boundary , era boundary experimental
Base of Biber 05663acc-b775-4485-aeec-4f1c9469b256 Concept , geochronologic boundary , era boundary experimental
Base of Saale/Warthe 05e5d127-08a5-4d5c-9e85-d4aa6cdbb4a6 geochronologic boundary , Concept , era boundary experimental
Base of Middle Albian 06de78d8-438f-4b29-8533-291faed8cd97 geochronologic boundary , Concept , era boundary experimental
Base of Capitanian 0773946d-e4d9-4c5b-9bb0-e3284d227abe era boundary , geochronologic boundary , Concept experimental
Base of Stenian 0792c545-e9a3-4866-8bbb-a236b9c5efb1 Concept , geochronologic boundary , era boundary experimental
Base of Middle Triassic 0801981c-f9ac-4a9a-8aed-26a38f446ba8 geochronologic boundary , Concept , era boundary experimental
Base of Oldest Dryas 08902507-b54b-4ffd-8d93-579f229b5243 era boundary , Concept , geochronologic boundary experimental
Base of GI-7a 0ac57272-1320-45d0-af8a-7d0bc1a04deb Concept , era boundary , geochronologic boundary experimental
Base of GI-1c1 0b301b80-8285-427a-be9d-1c7d5e4f22dc Concept , geochronologic boundary , era boundary experimental
Base of GS-7 0b4575cc-7220-48fa-8376-51917f3df516 geochronologic boundary , era boundary , Concept experimental
Base of GS-15.1 0b722c30-fff7-46e9-9035-a9a50b85e377 Concept , geochronologic boundary , era boundary experimental
Base of GI-12c 0b73f1b6-6e36-4656-8f11-d1bda5824420 Concept , era boundary , geochronologic boundary experimental
Base of Upper Maastrichtian 0b919839-6611-4e04-95ed-bf71ded3ceda era boundary , Concept , geochronologic boundary experimental
Base of Valanginian 0b982743-4574-409f-b113-7a6e17b590e4 geochronologic boundary , era boundary , Concept experimental
Base of Floian 0d11d32e-7427-4fcf-b584-cd6879a003a3 geochronologic boundary , era boundary , Concept experimental
Base of Langhian 0d4baef0-c7e2-40af-8cb0-84dd18735828 era boundary , geochronologic boundary , Concept experimental
Base of Upper Albian 0db2504e-97bb-4a27-b024-d6216cae7e92 Concept , geochronologic boundary , era boundary experimental
Base of GI-17.2 0ddb634c-4714-48da-ba87-6895987b8064 era boundary , geochronologic boundary , Concept experimental
Base of Middle Oxfordian 10626908-979d-493a-84bb-0483faea6709 era boundary , Concept , geochronologic boundary experimental
Base of Stephanian A 107928d9-d2ec-49d6-9cb9-b842f7f6a711 era boundary , geochronologic boundary , Concept experimental
Base of GI-9 108359b9-ede2-4fe3-8c56-56e2fca2d570 Concept , era boundary , geochronologic boundary experimental
Base of GI-18 10b8fce5-a5a2-4774-acd2-debcd9b0d08f era boundary , Concept , geochronologic boundary experimental
Base of GI-17.1a 10fc108e-53cc-4470-9dda-2f17ae862819 geochronologic boundary , Concept , era boundary experimental
Base of Upper Bathonian 128fdc73-2778-46a2-99f4-af1e8bf3d05e Concept , geochronologic boundary , era boundary experimental
Base of Upper Lutetian 13f941e2-2e22-4e21-962e-85c4d16289c1 era boundary , Concept , geochronologic boundary experimental
Base of Tortonian 148dc479-6cb8-4337-af09-91946c55c594 Concept , era boundary , geochronologic boundary experimental
Base of Domerian 152814f6-548c-4455-8dc2-50a6f33ae23a Concept , era boundary , geochronologic boundary experimental
Base of Upper Lochkovian 156a1aa4-8441-412b-b6bf-bd978218d8c7 era boundary , Concept , geochronologic boundary experimental
Base of GS-17.2 158f418c-9cd2-48e1-b32b-dc5ec4ab97eb Concept , geochronologic boundary , era boundary experimental
End of Neuzivian 16b2ce09-2269-404e-b4ad-e97fee13b440 Concept , geochronologic boundary , era boundary experimental
Base of Gargasian 17116f8f-a402-4dcd-b8f2-f0bd801ef256 era boundary , geochronologic boundary , Concept experimental
Base of Paniselian 1726e5b3-8ded-4776-ae31-77b2702f779a era boundary , Concept , geochronologic boundary experimental
Base of Upper Triassic 17bf7a0b-b734-428c-83bf-32508422c77b Concept , geochronologic boundary , era boundary experimental
Base of GI-22a 192f4103-4730-482e-bf63-8cd89605aaef geochronologic boundary , Concept , era boundary experimental
Base of Upper Famennian 19405be3-89af-4c00-b3c9-4f27b159f1f2 geochronologic boundary , Concept , era boundary experimental
Base of Turonian 19674e04-218a-4b36-9ba1-2007e8865eae geochronologic boundary , era boundary , Concept experimental
Base of Upper Carnian 19b9e499-a44a-40aa-8e09-6dd639df0bfc era boundary , geochronologic boundary , Concept experimental
Base of GI-2.1 1a4e61b1-eab5-476c-9b12-fdf7e865b093 era boundary , geochronologic boundary , Concept experimental
Base of Orosirian 1b71fef3-c68e-4e95-bc14-e605ef7ba36d era boundary , Concept , geochronologic boundary experimental
Base of GI-1a 1bdc1c35-e1a1-434b-b4ad-ba1a8e5a51b3 geochronologic boundary , era boundary , Concept experimental
Base of Rhaetian 1be273d5-4389-42fe-967e-74c389a458d2 era boundary , Concept , geochronologic boundary experimental
Base of GI-6 1bfe1fb5-fbd3-46ab-8d9e-e1a0c51e92d2 geochronologic boundary , Concept , era boundary experimental
Base of Ludlow 1d000830-255e-4e13-bae1-1bad58d5a0e6 era boundary , Concept , geochronologic boundary experimental
Base of Mindel/Riss Interglacial 1d9e6745-e488-4989-be3f-3f2f64576a77 Concept , geochronologic boundary , era boundary experimental
End of Savignean 1ea85064-1cdb-4415-807c-185e5d29cfc5 era boundary , geochronologic boundary , Concept experimental
End of Upper Pleniglacial 1f110647-84ba-4c98-a254-038f857670b2 Concept , geochronologic boundary , era boundary experimental
Base of Middle Hettangian 1ff4b77a-bd21-41d2-8ccb-aeef1ea0ea7b era boundary , Concept , geochronologic boundary experimental
Base of Wemmelian 200a0451-b0f3-4e0b-af0b-347cd2506e29 era boundary , Concept , geochronologic boundary experimental
Base of Permian 2103fb1d-63f4-4294-885e-4fb416e00bf3 Concept , geochronologic boundary , era boundary experimental
Base of Burdigalian 218be646-c89a-4051-bc72-d41710cf468a era boundary , geochronologic boundary , Concept experimental
Base of Middle Toarcian 222900b4-b2fb-4092-b63e-fdb5108a7ddd era boundary , Concept , geochronologic boundary experimental
Base of Statherian 224df1ba-02b5-4003-97af-4a65a534a3eb Concept , geochronologic boundary , era boundary experimental
Base of GI-16.1b 227ae70c-6e3e-470a-891f-aaa6a1fe699f Concept , geochronologic boundary , era boundary experimental
Base of Mesoarchean 227e18dd-1cfc-4dd2-8959-80d6dadb4887 Concept , era boundary , geochronologic boundary experimental
Base of Spathian 22bdd43d-8eda-450a-a698-c6fc432a2d23 era boundary , Concept , geochronologic boundary experimental
Base of Upper/Late Holocene 236210c3-2c47-4f2d-aa7f-aeb9926abab0 Concept , geochronologic boundary , era boundary experimental
Base du Paibien 24d60897-c0b8-4823-b0fb-6664d978cde1 Cette entrée correspondant à la Base du Furongien est remplac... Concept , geochronologic boundary , era boundary experimental
End of Lower Norian 24e6f287-bd5c-4fdc-b7cc-21b68f6c4833 geochronologic boundary , Concept , era boundary experimental
Base of GI-13b 25d97eec-5a65-4ecf-8ac2-7c2829e4fc2f geochronologic boundary , Concept , era boundary experimental
Base of GS-12 260f4d1d-2571-4c5a-a309-cc1f6381418e era boundary , geochronologic boundary , Concept experimental
Base of Wurm 260ff211-1129-464c-8c1a-08fabb2c2d0c geochronologic boundary , Concept , era boundary experimental
Base of GI-14d 266175f8-bd41-416a-97ac-33ad34886260 Concept , geochronologic boundary , era boundary experimental
Base of GI-14a 26b66e29-1a3e-44fb-ba76-a328b1e3621b Concept , geochronologic boundary , era boundary experimental
End of Smithian 26e87884-682e-4c7c-a238-e81b08f62c22 geochronologic boundary , era boundary , Concept experimental
Base of Late Glacial 27ed7b18-a21a-47ac-81ff-560f876dca5b geochronologic boundary , Concept , era boundary experimental
Base of Drenthe 27f88fb8-5826-484e-a781-03d439b117bf era boundary , Concept , geochronologic boundary experimental
Base of Priabonian 287e6515-c6c2-46d5-807a-36bfa66bc825 geochronologic boundary , Concept , era boundary experimental
End of Pterocerian 287ebe71-dac4-4443-92b0-ee6a810412cb Concept , era boundary , geochronologic boundary experimental
Base of Vendian 28b12286-a4c5-4f49-a359-987142cb56d2 geochronologic boundary , era boundary , Concept experimental
End of Early Weichselian 29b84d29-97d1-45fd-a5bb-ead0e6f2f78a Concept , geochronologic boundary , era boundary experimental
Base of Upper Bartonian 2af0f6e5-48ef-4f05-a54b-e137213b0c87 geochronologic boundary , era boundary , Concept experimental
Base of Upper Kimmeridgian 2b6c83e4-0fc5-4d14-8c09-67350ca75995 era boundary , Concept , geochronologic boundary experimental
End of Lower Olenekian 2bc0968a-834f-4d45-8aaa-bf0efb3115af geochronologic boundary , era boundary , Concept experimental
Base of Purbecko-wealdian 2bcdb5e0-9d65-4e0f-ab7f-b24a2c7faac6 era boundary , Concept , geochronologic boundary experimental
Base of Westphalian A 2c0b70b0-1971-4e5a-b14f-811c8eb54c58 era boundary , geochronologic boundary , Concept experimental
Base of Neoarchean 2c56a292-190b-4ddf-b30e-f9aa84072255 era boundary , geochronologic boundary , Concept experimental
Base of GI-23.2 2c90d6d4-79b2-4476-a645-0ef6a1523f04 geochronologic boundary , era boundary , Concept experimental
Base of GS-22 2d5274c3-f98a-4b98-b0a7-dfaaa4d221bc geochronologic boundary , era boundary , Concept experimental
Base of Aeronian 2d5e1102-04ef-4e03-a2f4-8e82c6a78961 era boundary , geochronologic boundary , Concept experimental
End of Middle Berriasian 2ec157ab-19e8-4b28-9aba-66a02f5c2271 era boundary , Concept , geochronologic boundary experimental
Base of Upper Barremian 2fecbe9f-ef4f-4b94-8b3e-0c1a5abc995b Concept , geochronologic boundary , era boundary experimental
Base of Cretaceous 30550924-a1bb-42bd-bfb8-13346a792f12 Concept , geochronologic boundary , era boundary experimental
Base of Upper Hauterivian 30ab68c6-cc7c-4afa-81c6-53b81e2a3074 era boundary , Concept , geochronologic boundary experimental
Base of GI-10 30acad98-3fdc-4430-890b-d036077d089d era boundary , geochronologic boundary , Concept experimental
Base of Middle Visean 31df2b9a-dcd6-4e34-b802-d580b9af8960 geochronologic boundary , era boundary , Concept experimental
Base of Upper Bajocian 328ab911-b0c5-46d9-ad39-123c694b7a57 Concept , geochronologic boundary , era boundary experimental
Base of Ordovician 358ce718-885b-4163-a267-4c38884774a5 Concept , geochronologic boundary , era boundary experimental
Base of Lopingian 35a40b93-0a68-43df-ab17-97be4c936a58 Concept , era boundary , geochronologic boundary experimental
Base of GI-13c 35cb3de1-5189-4cc5-9b0f-f7fd97f58068 Concept , geochronologic boundary , era boundary experimental
Base of GI-16.1c 36f0ee18-c7a3-40d2-a5fa-da05d667a7fb geochronologic boundary , era boundary , Concept experimental
End of Biarritzian 376be5c3-1330-44e1-b585-30242c914c87 era boundary , Concept , geochronologic boundary experimental
Base of Guadalupian 37e428fb-3921-41e0-b154-bfce5f802cef era boundary , geochronologic boundary , Concept experimental
Base of Ledian 38002006-6114-4ca3-8058-236990758a5d geochronologic boundary , era boundary , Concept experimental
End of Molinacian 384ff922-26ab-404e-b3c7-df9c2af22637 era boundary , Concept , geochronologic boundary experimental
Base of Illyrian 385ac9a7-7ef1-4963-8839-34547a9ed210 Concept , geochronologic boundary , era boundary experimental
Base of Eocene 3883ca7f-35af-4532-b2a1-110902e8b866 era boundary , geochronologic boundary , Concept experimental
Base of Sakmarian 389fee97-2164-44c2-9333-dfa493c72d44 era boundary , Concept , geochronologic boundary experimental
Base of Famennian 39593d2c-7d37-40d5-9cf7-975b2a085280 geochronologic boundary , Concept , era boundary experimental
Base of GI-24.1c 397313c5-3cf6-4285-8f3a-af1d03af6a13 era boundary , Concept , geochronologic boundary experimental
Base of Emilian 3a324a30-c67e-48b8-8f4a-e50c936346f1 era boundary , geochronologic boundary , Concept experimental
Base of Pragian 3a501cf3-8b84-480d-b028-75a4c4c9b8dd era boundary , Concept , geochronologic boundary experimental
End of Bavelian 3ac1da63-ab9a-4319-af58-ce260882679b geochronologic boundary , era boundary , Concept experimental
Base of GS-4 3b15cadb-0023-4903-afa3-9624e2a23b80 geochronologic boundary , Concept , era boundary experimental
Base of GI-24.1a 3ba32394-f408-4145-bf66-db53d933093f geochronologic boundary , Concept , era boundary experimental
Base of Middle Volgian 3bcd5b72-4314-4554-97b9-4d7f8a2c61ac Concept , geochronologic boundary , era boundary experimental
Base of Emsian 3bde9066-ca9c-4416-bd89-42618b5c585d era boundary , geochronologic boundary , Concept experimental
Base of GS-17.1 3d5180ca-26f6-4623-949d-5c993d4a2ace Concept , geochronologic boundary , era boundary experimental
Base of GI-1c2 3d6f11bc-b5bd-4c6f-aeef-c64c0f51b65e era boundary , geochronologic boundary , Concept experimental
Base of Dano-montian 3dd8eb09-0e39-45fb-ba84-e909dfabe25b geochronologic boundary , Concept , era boundary experimental
Base of Purbeckian 3e07b06f-c80a-4bc4-9a59-7a4e4d1d9e7e Concept , geochronologic boundary , era boundary experimental
Base of GS-21.1 3e9bb31d-5955-4a01-a884-ff8a7a964ba3 era boundary , Concept , geochronologic boundary experimental
Base of Praetiglian 3f17836f-6ff3-402a-aa27-2888783fd49e geochronologic boundary , Concept , era boundary experimental
Base of Wordian 401d7308-23e0-464f-ad00-17f0c4d572ec era boundary , geochronologic boundary , Concept experimental
End of Lacian 40c497a5-1515-4a17-802c-27c3bf7c969a geochronologic boundary , Concept , era boundary experimental
Base of Upper Ordovician 42f25337-126f-4118-ac47-975a41d66038 era boundary , geochronologic boundary , Concept experimental
Base of Astaracian 430a1469-7913-4285-8978-09b725984b39 Concept , geochronologic boundary , era boundary experimental
Base of Middle Bathonian 4389669d-d385-4fcf-bd96-79c0b793474d era boundary , geochronologic boundary , Concept experimental
Base of Bathonian 4390b92a-e6be-4a7f-86da-1e64cf59cb7a era boundary , geochronologic boundary , Concept experimental
Base of GS-24.2 4457b48d-c3b1-4d88-a09e-ecb750d8dc51 geochronologic boundary , Concept , era boundary experimental
Base of Bartonian 44664035-19fd-419c-b33b-72fb61c06c29 geochronologic boundary , Concept , era boundary experimental
Base of GI-23.1 44a8d4b1-3dc8-4e01-aedb-2b668cd439da era boundary , geochronologic boundary , Concept experimental
Base of Upper Edicaran 46b53755-33fb-401e-8bbc-6a8bf3c3b595 Concept , geochronologic boundary , era boundary experimental
Base of GI-24.1b 46d3a501-ff63-4e8b-a493-7db37c1b3232 geochronologic boundary , era boundary , Concept experimental
Base of Interpleniglacial 47d2e359-c8a4-4a62-9a7c-db43f7e8bd13 geochronologic boundary , era boundary , Concept experimental
Base of GI-22d 47f41a44-6a82-4e21-9521-d0f87a5d3776 Concept , era boundary , geochronologic boundary experimental
Base of GS-16.2 48787eb8-9d62-4003-ba2d-c074c82d7d20 geochronologic boundary , Concept , era boundary experimental
Base of Upper Pliensbachian 4a13e728-9f73-4017-930b-951cd46a1336 Concept , era boundary , geochronologic boundary experimental
Base of Maastrichtian 4ac90b0f-f48c-4500-883c-64684046c11a geochronologic boundary , Concept , era boundary experimental
Base of Wenlock 4af2c6da-2777-4a80-855c-caa45506c69b era boundary , Concept , geochronologic boundary experimental
Base of Homerian 4b2cebc4-1339-4c8f-8e13-59cbf259ed5c era boundary , geochronologic boundary , Concept experimental
Base of Livian 4b89c42b-6817-4825-91ee-1dc904e27f64 era boundary , geochronologic boundary , Concept experimental
Base of Glacial b 4c52b216-745a-4d8b-b95c-4ae17fee2842 era boundary , Concept , geochronologic boundary experimental
Base of GI-25c 4d52c8ba-5d3e-466d-b031-4e2c73692020 Concept , era boundary , geochronologic boundary experimental
End of Skiddavian 4d80a228-aced-4d06-99de-0e97c44d739c Concept , geochronologic boundary , era boundary experimental
Base of Upper Tournaisian 4dbc1eee-7f73-44bc-bfd7-0cb883a9585e geochronologic boundary , Concept , era boundary experimental
Base of Upper Pragian 4f66c991-c515-4ec7-b834-289b1e996b01 era boundary , Concept , geochronologic boundary experimental
Base of GI-21.1d 4f78538e-153b-444b-87f4-987050e26776 era boundary , Concept , geochronologic boundary experimental
Base of Carboniferous 5010c145-afd9-4489-b05e-1ced5ee489c9 Concept , geochronologic boundary , era boundary experimental
Base of Upper Aalenian 5014a90c-8965-432a-a87d-c12c76029b44 era boundary , Concept , geochronologic boundary experimental
Base of GI-7c 502cffb6-9ed9-4b4d-8f44-853deef4ba96 Concept , era boundary , geochronologic boundary experimental
Base of Stage4 5061cf7f-48c3-499a-83e9-84547b23febe geochronologic boundary , era boundary , Concept experimental
Base of GS-15.2 51f691bc-9a2f-433c-ac94-eb2b16bd37ce Concept , geochronologic boundary , era boundary experimental
Base of Pridoli 5283216b-1c5b-4bce-a86c-0bbfbcfb8433 era boundary , Concept , geochronologic boundary experimental
Base of Pelsonian 5351d766-5059-49dd-ab80-ba5b3271cb47 era boundary , geochronologic boundary , Concept experimental
End of Lenian 53f199eb-016e-4b40-8da2-66be070d8645 era boundary , Concept , geochronologic boundary experimental
Base of Redonian 543ada10-7f13-4542-b536-5d1f43031252 era boundary , geochronologic boundary , Concept experimental
Base of Cromerian III 55d33551-7c84-4815-bd04-525edd65f8f3 geochronologic boundary , Concept , era boundary experimental
Base of Upper Ypresian 5615699a-e4e5-488e-bce2-9d5aa233a4f7 Concept , era boundary , geochronologic boundary experimental
Base of GS-1 563a7157-ec9f-440a-96f3-afa1bc7a668b Concept , era boundary , geochronologic boundary experimental
Base of Westphalian D 57bcd93d-95eb-4b5a-ac11-cd3d13c7a35a era boundary , Concept , geochronologic boundary experimental
End of Upper Villafranchian 57f56579-ad3a-4e11-8e2d-a6140c71936d geochronologic boundary , Concept , era boundary experimental
Base of Upper Valanginian 581eabd5-5fd0-415e-bf02-0e7cd4c78307 Concept , geochronologic boundary , era boundary experimental
Base of Middle Weichselian 58b19530-d753-448c-9136-93eed5ecfdc5 Concept , geochronologic boundary , era boundary experimental
Base of Upper Toarcian 59d972fb-158e-4822-84f6-7400ec4e9ce7 Concept , era boundary , geochronologic boundary experimental
Base of Katian 5ac327b4-d059-4495-abe6-8a61e924f917 Concept , geochronologic boundary , era boundary experimental
Base of GI-1e 5b8c0a3d-af57-4c8b-addd-6e187851158e era boundary , Concept , geochronologic boundary experimental
Base of Upper Norian 5b91b721-5eec-478f-8165-e929e88adc8d geochronologic boundary , era boundary , Concept experimental
Base of GS-10 5c9660af-4fce-43d7-8ac8-0c8116ab91a3 geochronologic boundary , Concept , era boundary experimental
Base of Ladinian 5c9825e0-337f-4864-8328-2d0cd40b8e73 Concept , era boundary , geochronologic boundary experimental
Base of Ectasian 5c9f37bb-c290-45dd-806b-7b634fe3c2e3 geochronologic boundary , era boundary , Concept experimental
Base of Older Dryas 5d1f1bc0-952e-4f4e-9f13-660bac21ff29 era boundary , Concept , geochronologic boundary experimental
Base of Pennsylvanian 5e12337d-3690-4d5f-80fd-19266a62225d era boundary , Concept , geochronologic boundary experimental
Base of GI-12b 5e332298-959f-4689-a5b2-1d8a316465db era boundary , Concept , geochronologic boundary experimental
Base of Toarcian 60855570-c9e2-4172-96a2-ec740c16c2ec era boundary , Concept , geochronologic boundary experimental
End of Oldest Dryas 611cb3c8-6ae1-4da7-b13a-f14f49491ab9 geochronologic boundary , era boundary , Concept experimental
Base of Bølling 616bec45-1465-4730-bd82-e50136082877 Concept , era boundary , geochronologic boundary experimental
Base of Middle Pleistocene 6171f340-23ca-46d8-898d-dbcf60820ad5 geochronologic boundary , Concept , era boundary experimental
End of Interpleniglacial 61c8778b-21cd-4c19-ad2d-0aa5fc4093cf geochronologic boundary , Concept , era boundary experimental
Base of Artinskian 620c5b88-732f-4c77-aeb3-3b22106a3220 Concept , era boundary , geochronologic boundary experimental
Base of GI-1c3 622d5eb5-a61a-4c21-b59d-afa2e3c498db era boundary , geochronologic boundary , Concept experimental
Base of Lower Portlandian 63cf2b21-51fb-4202-a354-79185c66b384 era boundary , Concept , geochronologic boundary experimental
End of Icartian 641c7966-aaac-4a56-8a4d-4859d041801c Concept , geochronologic boundary , era boundary experimental
End of Sannoisian 644bdc20-e3b1-4739-8e0a-873e3313a0aa geochronologic boundary , era boundary , Concept experimental
Base of GI-20b 6470f697-51a8-43c3-aa3b-f9ada468eb12 era boundary , Concept , geochronologic boundary experimental
Base of GS-3 664cd910-48d5-402d-827b-294dd04e84b6 Concept , era boundary , geochronologic boundary experimental
Base of Chattian 66615f66-fc0b-4267-94b2-25685144a4ac era boundary , geochronologic boundary , Concept experimental
End of Upper Tongrian 66b92a03-1638-4bc4-86fd-93496447a5e3 Concept , era boundary , geochronologic boundary experimental
End of Middle Toarcian 66d63c15-8fe2-4413-a27f-66210ef9eae1 geochronologic boundary , Concept , era boundary experimental
Base of Middle Tithonian 67d1ee2f-9781-4a2f-8ad4-49f9c71916ed Concept , geochronologic boundary , era boundary experimental
Base of Virgulian 67ff3b40-5a9d-471d-aaef-87efd8297c9d era boundary , Concept , geochronologic boundary experimental
End of Sturtian 69742ff3-e953-4662-ae34-a15bea967353 Concept , geochronologic boundary , era boundary experimental
Base of GS-9 69a40b74-0ed4-4dcf-a5c4-af9293711df8 era boundary , Concept , geochronologic boundary experimental
Base of GI-1d 6a067ff5-e7e4-42a4-b19a-d88b3c4eebc4 era boundary , Concept , geochronologic boundary experimental
Base of GI-17.1c 6ac0259f-b365-4ea3-b222-d2adc616b50d era boundary , geochronologic boundary , Concept experimental
End of Acadian 6aed36ad-6cc3-44ef-b2c6-40e85087fd2b era boundary , geochronologic boundary , Concept experimental
Base of Bithynian 6af4bcf0-ace6-4a6a-9db5-4893a5b51179 Concept , era boundary , geochronologic boundary experimental
Base of Jurassic 6b854196-1c5d-4f45-b3a1-91406aa01352 geochronologic boundary , Concept , era boundary experimental
Base of Orleanian 6b96cdd8-7287-4e3c-9739-6e3dc72e6e95 geochronologic boundary , Concept , era boundary experimental
Base of Brigantian 6bca40ba-0729-443b-abda-5fb1338f157d geochronologic boundary , era boundary , Concept experimental
Base of GS-25 6d9f475b-6147-4d14-86fc-c66e6d047ce2 geochronologic boundary , Concept , era boundary experimental
Base of GS-26 6dabee0c-c992-4288-8c93-cb7d1c475797 geochronologic boundary , Concept , era boundary experimental
Base of Asbian 6e37d1a4-415b-4164-a730-5e005e78b44b geochronologic boundary , Concept , era boundary experimental
End of Lower Anisian 6f69ae94-cdfd-426d-9fe0-82084a7d0198 era boundary , Concept , geochronologic boundary experimental
Base of Atlantic 6f9ff6ad-3c34-4c83-b65b-a9ad6148cc72 geochronologic boundary , era boundary , Concept experimental
Base of GI-14e 6fb1820f-31d1-4ae2-a7d6-b4ac4d41148e era boundary , geochronologic boundary , Concept experimental
End of Devillian 7087e665-e54a-4c37-a5e4-c00d7064ee96 era boundary , Concept , geochronologic boundary experimental
Base of Guzhangian 70b8e132-ecfc-4e1d-b8c3-eb7055339cf5 era boundary , Concept , geochronologic boundary experimental
Base of Clansayesian 70cd9f3b-a7eb-495f-a273-1920d6ecbdf5 Concept , era boundary , geochronologic boundary experimental
End of Portlandian 71e720e0-dc1f-4603-886e-54ccbef81d61 geochronologic boundary , Concept , era boundary experimental
Base of Subboreal 71fc6e54-6ac9-4cf5-93ad-259c67725b66 era boundary , Concept , geochronologic boundary experimental
End of Lower Bartonian 728b7ec9-727a-4aa5-9347-fe2fbd3753ea Concept , geochronologic boundary , era boundary experimental
Base of Kungurian 72c1d260-d276-474e-b5cf-d44daa5d7201 era boundary , Concept , geochronologic boundary experimental
Base of GI-14c 72f666ff-311a-4904-ad9e-29f11ae873e8 geochronologic boundary , Concept , era boundary experimental
Base of Upper Tithonian 732b5583-bf1b-4074-ac4d-1c0312a80f66 era boundary , geochronologic boundary , Concept experimental
Base of Hirnantian 738aacd2-0828-41ea-80d1-886f84cd18de geochronologic boundary , era boundary , Concept experimental
Base of Heersian 73dfe274-3e2f-4b3c-b5c9-c649a435e0e7 geochronologic boundary , era boundary , Concept experimental
Base of Lenian 74a36215-04b2-4d71-a244-70a50a6dd6d5 geochronologic boundary , era boundary , Concept experimental
Base of Menapian 7528cd3e-3c28-4928-b757-a33aff0c5330 Concept , era boundary , geochronologic boundary experimental
Base of Stage2 75760c82-042f-459b-9221-944a11ab4917 Concept , geochronologic boundary , era boundary experimental
Base of GI-21.1a 75a0f6ed-cae7-404a-8610-bcee6adb36e6 geochronologic boundary , Concept , era boundary experimental
Base of Fuvelian 75a80bd6-150a-4a25-83cf-636593570932 Concept , era boundary , geochronologic boundary experimental
End of Carixian 768ae678-6eff-4d54-a61e-815af7bd56f5 era boundary , Concept , geochronologic boundary experimental
Base of GS-21.2 7820ce1e-e5d5-49d8-a662-2c23d73f1a5f geochronologic boundary , era boundary , Concept experimental
End of Lattorfian 78404a6d-83f5-409e-9712-3e81b43f71c7 era boundary , geochronologic boundary , Concept experimental
Base of Mesozoic 794cf818-8327-408a-89be-2f9ec33e1b93 era boundary , Concept , geochronologic boundary experimental
Base of Holkerian 797b1047-2eca-4399-85b6-f22a6a34147a era boundary , Concept , geochronologic boundary experimental
Base of Upper Pleniglacial 7a13f959-9cc6-4533-bedf-63e30ffbd49f geochronologic boundary , era boundary , Concept experimental
Base of Mayaian 7a5ce545-48b7-433e-a16b-94035d4f1f5e era boundary , geochronologic boundary , Concept experimental
End of Astaracian 7b31fa32-0f77-4bf1-857f-8c55e3c210fd geochronologic boundary , Concept , era boundary experimental
Base of GI-4 7bf54cb6-8fbf-4c18-ae78-b6dd2b773f19 era boundary , geochronologic boundary , Concept experimental
End of Middle Anisian 7bf9fd74-38c2-49ef-8ddf-3a4c8c63caa9 geochronologic boundary , Concept , era boundary experimental
End of Volgian 7c3467b1-ed8e-4617-80fe-962c9b00ed9e geochronologic boundary , era boundary , Concept experimental
Base of Younger Dryas 7c9ee328-3afa-4ae6-9115-b6fbee958dce Concept , era boundary , geochronologic boundary experimental
Base of Upper Callovian 7cc26178-55c3-408c-aeba-34af2b7eaad6 era boundary , geochronologic boundary , Concept experimental
Base of Upper Visean 7d4c71b1-1ac8-4e44-ad8b-dc48093129a4 era boundary , geochronologic boundary , Concept experimental
Base of Quaternary 7dda8482-b817-43df-ab9b-30e17862dc01 era boundary , geochronologic boundary , Concept experimental
Base of GI-14b 7df18849-0ffd-44cc-b113-25046fc31e24 geochronologic boundary , Concept , era boundary experimental
Base of GI-21.1c 7e14b9f8-8c8b-49d7-9518-528014f74d81 Concept , geochronologic boundary , era boundary experimental
Base of Cuisian 7f9fae23-66c3-4fc8-8e69-5912a726618d era boundary , geochronologic boundary , Concept experimental
End of Fassanian 800cddb1-a621-4670-b913-755d07409e55 geochronologic boundary , Concept , era boundary experimental
End of Upper Caradoc 806dd1ef-d8cd-47d9-9262-fdd431581748 geochronologic boundary , era boundary , Concept experimental
Base of GI-21.1b 82dc1fc9-4299-4b0f-a371-4b26f6b166cd era boundary , Concept , geochronologic boundary experimental
Base of GS-14QS 82fe684f-ed8e-44b4-a625-9986dd0ed926 Concept , geochronologic boundary , era boundary experimental
End of Upper Volgian 8318d6db-122f-49f2-8480-dfedfdd903d4 Concept , geochronologic boundary , era boundary experimental
Base of Pliensbachian 8324f3fa-c91f-4f17-92a7-352ae550e8a1 Concept , era boundary , geochronologic boundary experimental
Base of Paleo-proterozoic 83843974-ad16-4563-b727-25e4ab96101d Concept , geochronologic boundary , era boundary experimental
Base of Warthe 84a59794-7a12-4dc0-9d4a-2a15dde4de73 era boundary , Concept , geochronologic boundary experimental
End of Riss/Wurm interglacial 84a977bf-2f4d-4652-9810-37089f14bf9d era boundary , geochronologic boundary , Concept experimental
Base of Precambrian 851a3b88-a31d-473b-96b1-bd153f959237 era boundary , Concept , geochronologic boundary experimental
Base of Middle Mississippian 85413454-ae51-4af1-b1f5-4391c9b6390f Concept , era boundary , geochronologic boundary experimental
Present 85581cee-61ea-4932-8cd2-bf836871f6cc era boundary , Concept , geochronologic boundary experimental
End of Toyonian 8598c174-5045-48a3-b7de-4ff01aa5a729 Concept , era boundary , geochronologic boundary experimental
Base of Upper Cenomanian 860bebdc-981e-4513-b00a-68dc1096cc65 geochronologic boundary , Concept , era boundary experimental
Base of Tommotian 86163a04-ef1c-43eb-bcb5-b7785d440f9c geochronologic boundary , era boundary , Concept experimental
Base of Mindel 86f834d8-b43b-4018-b98f-572fba473c3a geochronologic boundary , Concept , era boundary experimental
Base of GI-22g 8722ea43-c4c8-4e22-80e5-18b5c5ab897d geochronologic boundary , era boundary , Concept experimental
Base of Pterocerian 873aad8e-9b30-4b32-a5c7-ec4ec9912cd6 Concept , geochronologic boundary , era boundary experimental
Base of GI-2.2 883c5d13-1f7b-4926-b36f-55cad408d4a2 era boundary , Concept , geochronologic boundary experimental
Base of Olenekian 88f3851d-f3e9-4c15-90c9-45a9e99ce13c era boundary , Concept , geochronologic boundary experimental
End of Auversian 88f96af6-ffdc-436b-a702-c24ac2fd7eec geochronologic boundary , era boundary , Concept experimental
Base of Early Weichselian 89835a89-a9c3-453e-8c83-3b45f222fb4e era boundary , geochronologic boundary , Concept experimental
Base of Donau/Gunz Interglacial 8a49143c-ec48-4fbd-a648-efe08d6505ab geochronologic boundary , Concept , era boundary experimental
Base of GS-2.2 8aa15533-945a-43fa-8f36-c99f7d51c6f3 Concept , era boundary , geochronologic boundary experimental
End of Namurian 8c3ca832-130f-48e7-86f3-3cdc44cddbd9 era boundary , geochronologic boundary , Concept experimental
Base of Furongian 8c779edf-5ca7-4892-84a9-5d77fa3743b7 geochronologic boundary , era boundary , Concept experimental
Base of GI-8c 8cb5ac14-6df2-4ab0-8a34-96e29427f186 geochronologic boundary , era boundary , Concept experimental
Base of GS-2.1b 8ccb84e3-2a6b-40e8-8d68-d7a4760b069b era boundary , geochronologic boundary , Concept experimental
Base of Middle Coniacian 8cdd9b0c-3142-4611-8e9c-73fefe1847c1 geochronologic boundary , Concept , era boundary experimental
Base of Upper Devonian 8d7c91d8-b7e7-4c6c-b410-cfafe94a3f9e Concept , geochronologic boundary , era boundary experimental
Base of Tuvalian 8daa60dc-abc6-4840-b87a-88453ec39f2a era boundary , geochronologic boundary , Concept experimental
Base of Proterozoic 8db590bc-f30d-4206-95c3-58b697f8e36c geochronologic boundary , Concept , era boundary experimental
Base of Coniacian 8df090ae-49bb-42e0-b385-294de24210e1 geochronologic boundary , era boundary , Concept experimental
End of Upper Namurian 8e164986-fb60-4085-8802-af8d2779b0a8 Concept , era boundary , geochronologic boundary experimental
Base of GI-8b 8e1fe009-c439-4d22-8948-bca780a0775d geochronologic boundary , Concept , era boundary experimental
Base of GS-18 8f1bee25-b762-434f-8515-e20235a5be7b era boundary , Concept , geochronologic boundary experimental
Base of Sevatian 8f53c282-028c-493b-bbdf-7fcae583a3e2 Concept , geochronologic boundary , era boundary experimental
Base of Sturtian 900f0a32-b65d-4216-a20f-221c3623ac64 Concept , geochronologic boundary , era boundary experimental
Base of Upper Oxfordian 903f2da2-c340-4825-bd06-b4f829f8de93 era boundary , geochronologic boundary , Concept experimental
Base of Upper Turonian 91053acc-a101-448c-a9b6-64a9b7928738 geochronologic boundary , era boundary , Concept experimental
Base of Upper Portlandian 924764f1-27bb-41b0-ac23-a8d2a6c13cfa geochronologic boundary , era boundary , Concept experimental
Base of Phanerozoic 9256dca6-10e3-4e46-975e-3ff4663ed4e0 geochronologic boundary , Concept , era boundary experimental
Base of Reuverian B 9301876d-b737-44e9-a49a-316cfb7ea9ef Concept , era boundary , geochronologic boundary experimental
End of Paleo-proterozoic 93101994-f03c-408d-a71a-8a17f0e3834f Concept , geochronologic boundary , era boundary experimental
Base of Upper Anisian 94ddea5c-6187-48b4-80f0-02c8e6b4e8ba era boundary , geochronologic boundary , Concept experimental
Base of GI-5.2 94e16481-e76f-4145-a3e3-ae6cff4a7cb1 geochronologic boundary , Concept , era boundary experimental
Base of GS-16.1 9552aa9a-d119-4fcd-82ba-b0ac013ed14d geochronologic boundary , Concept , era boundary experimental
Base of Upper Santonian 95de03bd-35a5-42eb-9640-e19d50bf891e geochronologic boundary , Concept , era boundary experimental
Base of Holocene 96577bfe-892a-4b91-b64e-81899c802f32 geochronologic boundary , era boundary , Concept experimental
Base of GI-25a 96d4be41-7317-4870-912d-541c1abbbe80 era boundary , geochronologic boundary , Concept experimental
End of Lower Pliensbachian 96f49844-c4d8-4e99-a1b0-244db4e92306 geochronologic boundary , era boundary , Concept experimental
Base of GS-11 9805a3cc-1055-48fa-9700-9bc6d784ad5e era boundary , Concept , geochronologic boundary experimental
Base of Sequanian 980e81c6-4bbc-4478-a1fd-cdd97c219ed5 era boundary , geochronologic boundary , Concept experimental
Base of Upper Campanian 98507279-7d82-4d56-913b-886005aa58dc Concept , era boundary , geochronologic boundary experimental
Base of Marinesian 98d3211e-effe-411d-856a-e6d7f7bbe5d8 Concept , geochronologic boundary , era boundary experimental
End of Villersian 99805776-49ae-4d12-9c61-b91e76116c42 Concept , era boundary , geochronologic boundary experimental
Base of Gunz 9985d93b-6be2-4e33-a8c0-743f4c9d239d Concept , era boundary , geochronologic boundary experimental
Base of Sicilian 9995680b-c136-4768-863c-ab753ae89707 geochronologic boundary , Concept , era boundary experimental
Base of Gzhelian 9b7f259c-687f-45b8-9430-70f63d662d77 geochronologic boundary , era boundary , Concept experimental
Base of Messinian 9b946151-0ab5-4363-ad6e-87abbb6d18f5 era boundary , geochronologic boundary , Concept experimental
End of Urgonian (Vercors) 9ba36d44-d736-453b-b5df-a071f1102342 era boundary , Concept , geochronologic boundary experimental
Base of Arundian 9bea0903-8c2f-40fe-9e41-b12e80e9cbf9 Concept , geochronologic boundary , era boundary experimental
Base of Couvinian 9c1d0c31-421b-4391-8eae-04c434cf55e0 geochronologic boundary , Concept , era boundary experimental
Base of Middle Santonian 9c27d088-0ef4-4de8-890f-2c9362c71679 geochronologic boundary , Concept , era boundary experimental
Base of Toyonian 9c39ccfa-f562-4867-a28e-9e06a6618f8e Concept , geochronologic boundary , era boundary experimental
Base of Cromerian IV 9cf08dc3-5e58-463e-b859-9c7f606d93ac era boundary , geochronologic boundary , Concept experimental
Base of Middle Holocene 9d7b8772-fcb7-4100-b832-b777b4f3b125 era boundary , Concept , geochronologic boundary experimental
Base of GI-25b 9e227087-da95-4518-8de4-02d36836161c era boundary , Concept , geochronologic boundary experimental
Base of Cenozoic 9e9ac394-a387-4e25-8f2c-9204b7c01372 era boundary , geochronologic boundary , Concept experimental
Base of Silurian 9fb1185f-8d40-425d-af09-730220d0517b geochronologic boundary , Concept , era boundary experimental
Base of GI-5.1 a14f3f01-d2ba-49a5-a468-172ac299f483 geochronologic boundary , Concept , era boundary experimental
End of Biber/Donau Interglacial a28dce53-4453-4a17-a4a8-b7c8cada0817 Concept , geochronologic boundary , era boundary experimental
Base of Upper Weichselian a2c97a5d-4ea0-4054-837c-843feb95db9c Concept , geochronologic boundary , era boundary experimental
Base of Cromerian a320f48d-6d57-49b4-b959-abc638d54789 era boundary , Concept , geochronologic boundary experimental
Base of Changhsingian a38409be-0b72-41c2-93bc-f2249ec250a5 era boundary , Concept , geochronologic boundary experimental
Base of Upper Hettangian a43f308d-ea72-428d-be2a-8a4417776171 era boundary , Concept , geochronologic boundary experimental
Base of GS-19.1 a56db150-14c6-463b-b2fd-ee5b2c564152 era boundary , Concept , geochronologic boundary experimental
Base of Alaunian a5d96034-c5d8-4055-b274-2c4830c4e777 era boundary , Concept , geochronologic boundary experimental
Base of GS-24.1 a736dabb-8f6b-4222-ba05-9e4718f7c420 geochronologic boundary , era boundary , Concept experimental
Base of Saalian a7db72bd-de24-4cfe-b072-9fac57f8bb12 Concept , geochronologic boundary , era boundary experimental
End of Urgonian (Provence) a806c9f0-936b-4e88-83e8-b0a475a9ad23 geochronologic boundary , Concept , era boundary experimental
Base of Oligocene a828aeb4-8520-4294-9276-cae8d3caba8b geochronologic boundary , era boundary , Concept experimental
Base of Upper Olenekian a847dcf3-cec2-4bc7-b884-021f5539e5f9 Concept , geochronologic boundary , era boundary experimental
Base of Series2 a86e6391-0e69-43f7-ae48-e55db1778af5 geochronologic boundary , era boundary , Concept experimental
Base of Middle Aalenian a90a4136-ff29-4855-b9e7-e95801b81242 geochronologic boundary , Concept , era boundary experimental
Base of Wacken/Dömnitz aa3ec1b5-a361-4c28-a593-229ba40e247d geochronologic boundary , Concept , era boundary experimental
Base of GI-21.1e aafeef42-82b8-4d49-805e-0fea33df2d04 era boundary , Concept , geochronologic boundary experimental
Base of GS-20 ab5cfa01-7f6b-4bee-a0d9-aa23eeda2994 era boundary , Concept , geochronologic boundary experimental
Base of Serravallian ab7b214b-d0db-42ff-9686-1f4b63b26fce geochronologic boundary , Concept , era boundary experimental
Base of Calabrian abb93eb3-88cd-4aec-a208-84f1f20c3cd8 Concept , era boundary , geochronologic boundary experimental
Base of Allerød abfafd1b-3aa7-49b2-aadd-7752ed9f6069 geochronologic boundary , era boundary , Concept experimental
Base of Miaolingian aceb57b3-5e1c-45f8-84ab-3affdbb17256 Concept , geochronologic boundary , era boundary experimental
Base of Subatlantic ae1e6909-cf22-4f72-984c-5c58319c0434 geochronologic boundary , Concept , era boundary experimental
End of Alaunian aeb5ef76-4170-421c-bac6-6ce74766b208 Concept , geochronologic boundary , era boundary experimental
Base of GI-22f af5377d4-cc12-4385-8a7f-3e59441db689 geochronologic boundary , Concept , era boundary experimental
End of Julian af9230e2-f8e3-4217-8266-268cc8783d0b Concept , geochronologic boundary , era boundary experimental
Base of Upper Emsian afbb02ce-c8ad-4f60-bea8-df807a3597f6 era boundary , geochronologic boundary , Concept experimental
Base of Middle Jurassic b0735cb5-09c5-45a5-8ef2-fc95ff26889c Concept , era boundary , geochronologic boundary experimental
Base of Paleoarchean b155087c-9ddf-47c3-b77e-299223bfbc53 era boundary , Concept , geochronologic boundary experimental
Base of Westphalian B b18a6ea1-6626-4db4-85ca-f4d4f359266d era boundary , geochronologic boundary , Concept experimental
Base of Middle Berriasian b1fae092-4076-433a-a1b8-95a93acf0d89 Concept , geochronologic boundary , era boundary experimental
Base of Elsterian b21df40d-3a1c-4271-8e8a-6a0450825097 era boundary , Concept , geochronologic boundary experimental
Base of Riss b2c28151-f9b5-46df-8910-f9e361a72319 geochronologic boundary , Concept , era boundary experimental
End of Lower Carnian b2dd63d0-9dc5-45fb-bbcc-7c255da195f0 era boundary , Concept , geochronologic boundary experimental
Base of Selandian b49ffa8c-7e5f-4516-90f7-cb62415323d9 Concept , era boundary , geochronologic boundary experimental
Base of Strunian b4c27504-905c-41e4-91aa-20933a8ebed6 Concept , era boundary , geochronologic boundary experimental
End of Mayaian b5f3ba26-33a4-4b84-8495-acf574ab7415 era boundary , geochronologic boundary , Concept experimental
Base of Middle Cenomanian b62186b5-2f3d-47da-8c00-d511c14d5e9c geochronologic boundary , Concept , era boundary experimental
Base of GI-11 b6850635-7f9a-4aae-a7b6-293ee1d62bc8 era boundary , geochronologic boundary , Concept experimental
Base of GS-6 b68e506b-020e-41b2-a729-45ef5e79213f Concept , era boundary , geochronologic boundary experimental
Base of Weichselian b6ac4551-f1a5-40cc-b57e-333236bf6cb1 geochronologic boundary , era boundary , Concept experimental
Base of Piacenzian b73fcf68-97fd-44d0-a47b-72f008b8334f geochronologic boundary , era boundary , Concept experimental
Base of Dienerian b7440911-9911-467d-9f52-4516752bcc54 Concept , era boundary , geochronologic boundary experimental
Base of Norian b789d52e-0307-4f00-8926-ab9a2b507d28 Concept , geochronologic boundary , era boundary experimental
End of Bedoulian b7b7a560-e2d8-4167-bd21-a5caeab48414 geochronologic boundary , era boundary , Concept experimental
Base of Upper Cretaceous b866ccab-e83d-493f-a6c6-6545d1015f97 Concept , era boundary , geochronologic boundary experimental
Base of GI-16.1a b893723b-145a-4118-bebd-52ceb11a0b25 geochronologic boundary , era boundary , Concept experimental
End of Aegean b94e79d9-d079-41b6-bc63-ce1f85ede6c1 era boundary , Concept , geochronologic boundary experimental
Base of GI-1b b9ad68bf-2fba-489b-93c1-8a4925e2c1fa Concept , era boundary , geochronologic boundary experimental
Base of GI-17.1b ba0951a8-647a-4ad1-8df1-aeb929f5bba0 era boundary , Concept , geochronologic boundary experimental
Base of GI-3 ba0f653e-ceaf-4953-a894-a7057fefb89c geochronologic boundary , Concept , era boundary experimental
Base of Tiglian baf0d07c-6dbe-4dba-8455-d3b2947f5a91 Concept , geochronologic boundary , era boundary experimental
Base of Stage10 bafb738a-19ec-4fdd-86e5-2c8fe9711ace geochronologic boundary , era boundary , Concept experimental
Base of Darriwilian bb6f9b9e-040e-4c1c-99cc-cc7b2ad5b617 geochronologic boundary , era boundary , Concept experimental
Base of Montian bbd4b558-2a87-438f-bb90-9d504d0b7de9 geochronologic boundary , era boundary , Concept experimental
Base of Aptian bc104529-76f5-4fb5-885a-9402fe9e9078 geochronologic boundary , Concept , era boundary experimental
End of Holsteinian be86bda3-d993-43d4-8875-ee892edb0563 geochronologic boundary , era boundary , Concept experimental
Base of Gunz/Mindel Interglacial be9388ea-3141-449a-947d-2489393039d1 era boundary , Concept , geochronologic boundary experimental
Base of GS-19.2 bec3226e-28e3-4c8e-8a98-e3ead2c817a1 geochronologic boundary , era boundary , Concept experimental
Base of Thanetian bfa6a9cc-031f-4abc-a9fb-8026bb9e89d9 era boundary , geochronologic boundary , Concept experimental
Base of GI-22e bfe80923-83f5-4d20-a109-daa5b57d9bf9 Concept , geochronologic boundary , era boundary experimental
Base of Rhyacian c125b133-2b96-4fbb-b3dc-50eabefe77a2 geochronologic boundary , Concept , era boundary experimental
Base of GI-19.2 c16910ec-673f-4be4-8775-761091b4c523 geochronologic boundary , era boundary , Concept experimental
Base of Mesoproterozoic c224ba2c-67d0-4189-8878-10c847a22f28 geochronologic boundary , era boundary , Concept experimental
Base of GI-13a c2d83879-89f5-40e6-9432-aa7eee01c48a Concept , era boundary , geochronologic boundary experimental
End of Botomian c4596b89-5270-459b-b82f-06b3a3b01100 era boundary , Concept , geochronologic boundary experimental
Base of Ivorian c631dbf6-1403-4247-bec9-31279dc9df3f Concept , era boundary , geochronologic boundary experimental
Base of Upper Frasnian c636ba50-457b-4513-9c07-ae0449cbbed9 era boundary , Concept , geochronologic boundary experimental
Base of Eburonian c64ca284-7c81-4678-8565-5bb2632763b6 Concept , era boundary , geochronologic boundary experimental
Base of Upper Berriasian c7d49ebb-a448-40ad-84b5-8778c5ffe0b4 geochronologic boundary , era boundary , Concept experimental
Base of Amgaian c8534d38-c714-4a63-ae0d-f180797bb642 era boundary , Concept , geochronologic boundary experimental
Base of Upper Jurassic c8b02187-8583-4bdb-a838-ca2d1e59b021 era boundary , Concept , geochronologic boundary experimental
Base of GI-20c c8b6f883-7f88-4cbb-9188-5e200e1e955c geochronologic boundary , Concept , era boundary experimental
Base of Sinemurian c966f5ff-20b7-4b0d-9a4f-58b9e6c21b0a Concept , era boundary , geochronologic boundary experimental
Base of Upper/Late Pleistocene c9a146eb-efa7-4273-bfbb-af046dd42bae geochronologic boundary , era boundary , Concept experimental
Base of GI-16.2 ca1014ff-d60a-4998-b420-98be4a0ffb44 geochronologic boundary , Concept , era boundary experimental
End of Lower Ladinian ca47e3f1-e8c9-454a-9195-c63985d9e52d era boundary , geochronologic boundary , Concept experimental
End of Urgonian (Jura) cac21eab-9e78-4c48-921b-b2b94022fbef geochronologic boundary , era boundary , Concept experimental
Base of Middle Turonian cadbbce6-ac88-4988-b975-4a00a0b5fd30 Concept , geochronologic boundary , era boundary experimental
Base of Archean cb332f57-08ce-4c79-95f1-0bd2a0dc4a06 era boundary , Concept , geochronologic boundary experimental
Base of GS-8 cbc4e6fb-3da3-4824-8604-c50344bf6c1a geochronologic boundary , Concept , era boundary experimental
Base of GS-2.1c cbc9da72-6269-4201-b78b-339ce0eb5809 Concept , era boundary , geochronologic boundary experimental
Base of GI-7b cc21eed2-26cb-4121-aa9d-0535a1f915ed Concept , era boundary , geochronologic boundary experimental
Base of Middle Lutetian cc2d2d4e-cde5-4e48-bb3f-36cf93d3dc08 Concept , era boundary , geochronologic boundary experimental
Base of Jiangshanian cc9916a1-83ef-4093-a87f-28e80fda4958 geochronologic boundary , Concept , era boundary experimental
Base of Callovian cd78f601-a3f8-42dc-b9bd-86ef03595c57 geochronologic boundary , Concept , era boundary experimental
Base of Donau cde826bd-4e10-42e1-b75d-90f23970c391 era boundary , Concept , geochronologic boundary experimental
End of Holkerian ce1e351a-60e2-431e-a947-1e9bd2cc1ecf geochronologic boundary , Concept , era boundary experimental
Base of Waalian ce2e9aeb-3cda-419a-8797-948dc7366e4d Concept , era boundary , geochronologic boundary experimental
Base of Lotharigian ce5255c2-5ddd-4417-9af2-029246198f65 era boundary , geochronologic boundary , Concept experimental
Base of Hauterivian cf032a51-1aa6-4ddd-9386-e87a1ff0baf5 Concept , geochronologic boundary , era boundary experimental
End of Arundian cfe7535a-e43e-47ba-ae7d-03724ddb848e era boundary , Concept , geochronologic boundary experimental
Base of Upper Sinemurian cff39b14-7369-4954-96ea-dc77cae20002 geochronologic boundary , era boundary , Concept experimental
Base of Namurian C d03d54cc-22bf-4502-a9d8-d245fde0122a era boundary , geochronologic boundary , Concept experimental
Base of Llanvirn d1b8ffc3-82be-432b-a6a5-6bf26c065245 Concept , geochronologic boundary , era boundary experimental
Base of Bavelian d2685681-8207-42ec-8281-9edf633e2269 era boundary , geochronologic boundary , Concept experimental
End of Middle Norian d2acf714-5f81-472d-85ee-d7da4075e5f6 Concept , geochronologic boundary , era boundary experimental
Base of Upper Volgian d3c5bd8b-f504-466b-ba2c-4f059ed1c744 era boundary , geochronologic boundary , Concept experimental
Base of Ediacaran d4692488-1202-476f-9dd6-6bda66b0f655 era boundary , Concept , geochronologic boundary experimental
Base of GI-15.2 d4eb3c78-7e71-4c6f-a38f-994b006b36da era boundary , Concept , geochronologic boundary experimental
End of Middle Weichselian d51716c3-22f3-4eb6-801b-2d50df0ed27b Concept , geochronologic boundary , era boundary experimental
Base of Cromerian I d54a92a6-41c0-486e-822d-1d4d1c5cb751 era boundary , Concept , geochronologic boundary experimental
End of Namurian C d57c89f3-0b28-4cb9-a581-3b594a6ddf19 Concept , geochronologic boundary , era boundary experimental
Base of GS-23.1 d582871d-bc8c-40d4-9471-26743c8d70a0 Concept , geochronologic boundary , era boundary experimental
Base of Glacial a d597ba75-a707-4e2c-b68a-9c415b9da41a era boundary , geochronologic boundary , Concept experimental
Base of GI-19.1 d6c51fb2-f285-498b-9257-9ef5a92e5a28 Concept , geochronologic boundary , era boundary experimental
Base of Lower Ashgill d76d33a0-8334-4d35-b0d4-592e05930d77 Concept , geochronologic boundary , era boundary experimental
End of Rognacian d792cd73-bff6-4831-a5f6-33490146c9ad geochronologic boundary , era boundary , Concept experimental
Base of Upper Coniacian d7cf8c2e-d2a4-4c7c-bb36-ea85ea583958 era boundary , Concept , geochronologic boundary experimental
Base of Middle Pennsylvanian d7efbf32-72f0-4262-bed1-f1a5728209d0 Concept , geochronologic boundary , era boundary experimental
End of Ilerdian d80804a3-87fc-4434-ae55-ab33f3871bca Concept , era boundary , geochronologic boundary experimental
Base of Poederlian d883a72d-a60b-4808-933a-b37671d44edf era boundary , geochronologic boundary , Concept experimental
Base of GI-20a d8c2df20-0100-47d1-8d0b-e6aaa5f65ea2 Concept , geochronologic boundary , era boundary experimental
Base of Telychian d9af13da-3397-4594-b420-5c90321b3b49 era boundary , Concept , geochronologic boundary experimental
Base of Barremian d9b929fe-1464-4a72-9d62-957498fac3cb geochronologic boundary , Concept , era boundary experimental
Base of Upper Eifelian d9f161d2-7aed-4a3f-a1d4-871055202e56 era boundary , Concept , geochronologic boundary experimental
End of Lusitanian da70453d-435b-49e1-9880-207527079d4b geochronologic boundary , era boundary , Concept experimental
End of Caradoc dab5b258-341f-4d86-a829-404486997c73 Concept , geochronologic boundary , era boundary experimental
Base of Lower Pleniglacial dc8e18a4-ca66-42ef-ae36-0c9d21c624a0 era boundary , Concept , geochronologic boundary experimental
Base of GI-22c dcd8e822-2203-4ccc-9761-eee04777acd1 geochronologic boundary , era boundary , Concept experimental
Base of Middle Norian dd072628-2e59-44e1-aec9-13f81aa9342a era boundary , Concept , geochronologic boundary experimental
Base of Neoproterozoic de707baa-e110-4627-8e40-316c35e5c325 Concept , era boundary , geochronologic boundary experimental
Base of GS-23.2 de930215-2412-4ec5-ad54-e040466f3b90 geochronologic boundary , Concept , era boundary experimental
End of Pelsonian df53ab36-5dec-47cb-b09a-dee60d6f9459 geochronologic boundary , Concept , era boundary experimental
Base of GI-21.2 df5b9370-5065-45a0-9526-5ad87f879642 Concept , geochronologic boundary , era boundary experimental
Base of Vraconian e00db4dd-505d-4239-9048-7875ffb1cf43 Concept , geochronologic boundary , era boundary experimental
Base of Middle Callovian e018b160-2ce5-446f-8fa7-2227d62b4644 Concept , era boundary , geochronologic boundary experimental
Base of Reuverian C e0abb389-4b32-4a55-a1a8-ec299b3006c1 era boundary , Concept , geochronologic boundary experimental
Base of Albian e0b34771-2850-4599-bc1c-88ee4c9a92f5 geochronologic boundary , Concept , era boundary experimental
Base of GI-15.1 e0c4b3e8-0777-43f2-a155-3c8458286525 Concept , geochronologic boundary , era boundary experimental
Base of Middle Campanian e14af7b6-2019-4a15-bd8d-607da8f63340 geochronologic boundary , Concept , era boundary experimental
Base of Cromeriann II e16719d7-8d13-4e37-88d4-e611c90674a5 era boundary , Concept , geochronologic boundary experimental
Base of Würm II e17c6a68-42da-43e1-afbc-abc977190437 era boundary , geochronologic boundary , Concept experimental
Base of Middle Ordovician e27c9465-fd8a-4ea7-a254-8248cb118f6f Concept , geochronologic boundary , era boundary experimental
Base of Givetian e348ddb1-62e7-4140-b05d-eeffef0d6755 geochronologic boundary , Concept , era boundary experimental
Base of Upper Burdigalian e3aec1ac-2441-4137-aa36-4402ac7cf109 era boundary , Concept , geochronologic boundary experimental
End of Eemian e4b250d4-dd64-434d-957c-42358e39eb40 geochronologic boundary , era boundary , Concept experimental
Base of Cryogenian e4bee05c-9844-4841-bd33-a068e0b21d0f era boundary , Concept , geochronologic boundary experimental
End of Stephanian C e5214e02-aa5b-4354-aa63-36876f5f447c geochronologic boundary , era boundary , Concept experimental
Base of GS-5.2 e532841e-7f7c-4a3b-b824-78e3ffefdc74 era boundary , Concept , geochronologic boundary experimental
Base of Icartian e5df2781-439a-4062-9476-ed1ec5d2c66a era boundary , geochronologic boundary , Concept experimental
End of Upper Lutetian e6c57eae-bedc-4d74-93b1-9f4667ecbe38 geochronologic boundary , Concept , era boundary experimental
Base of Pliocene e711cf39-8aac-46e7-ba7c-c6d3e3a0d61b Concept , era boundary , geochronologic boundary experimental
Base of Upper Mississippian e7a66eba-e521-488e-96cf-7dbaaa42d4f8 Concept , geochronologic boundary , era boundary experimental
Base of Upper Givetian e82cc99b-5adf-4a72-9b54-cf6637a30533 geochronologic boundary , Concept , era boundary experimental
End of Upper Portlandian e8b9741a-41aa-4396-933a-686adf3ddb63 era boundary , geochronologic boundary , Concept experimental
Base of Middle Devonian e939c6d9-4bca-4ed8-b6b5-8b0183024077 geochronologic boundary , Concept , era boundary experimental
Base of Devonian e961f839-fc41-4dc8-9397-6f9aaa1fab8d era boundary , Concept , geochronologic boundary experimental
Base of Ludfordian ea1e73ef-d8bb-45f1-85cd-135f299f056d Concept , geochronologic boundary , era boundary experimental
Base of Boreal ea2856f2-cb2f-4685-9f67-30c5499712ff Concept , geochronologic boundary , era boundary experimental
Base of Würm IV ea448d90-5e34-45f8-ab3e-708b9441f7e1 era boundary , Concept , geochronologic boundary experimental
Base of Ashgill ead84044-acc6-4996-a6a1-6ca665077938 geochronologic boundary , era boundary , Concept experimental
Base of GS-5.1 eb2d8c10-31a1-4932-9f6a-3684e94d8cd9 geochronologic boundary , Concept , era boundary experimental
Base of Portlandian eb416cf5-2d64-41c7-8454-8cf8e1fc6064 era boundary , Concept , geochronologic boundary experimental
Base of Holsteinian eb57da96-e8b2-429e-b221-d7fe1d4a33e8 era boundary , geochronologic boundary , Concept experimental
End of Tongrian ecb37af8-3789-4270-a1d0-08b035ccfc05 Concept , era boundary , geochronologic boundary experimental
Base of Savignean ecc0aee6-db8e-44bf-b7b4-749edfc744e1 geochronologic boundary , era boundary , Concept experimental
Base of Upper Pennsylvanian ed79e9f4-444e-4a48-be7e-c087b37a3a8a era boundary , Concept , geochronologic boundary experimental
Base of Neogene ef8eef61-6497-46f2-8e7c-029cd3bcb1ce era boundary , Concept , geochronologic boundary experimental
Base of Upper Aquitanian f0e6879c-9def-4cdd-953e-92c100749160 geochronologic boundary , era boundary , Concept experimental
Base of Kimmeridgian f10860e7-1800-4eec-a8c3-b0dcfd84e67d era boundary , Concept , geochronologic boundary experimental
Base of Warnantian f13a9834-179d-471c-9d0c-1d36a6d40aa4 Concept , geochronologic boundary , era boundary experimental
End of Amgaian f16a5d15-d780-4bf9-a7c5-336c2c58199d Concept , geochronologic boundary , era boundary experimental
Base of Tithonian f182278e-725f-48e2-8469-ae0ebb29e016 geochronologic boundary , Concept , era boundary experimental
Base of Longobardian f1afb426-e6a8-4d1a-adfb-be886219cf95 Concept , era boundary , geochronologic boundary experimental
End of Tyrrhenian f1cc358f-84bb-46b3-aafe-c94836f53097 era boundary , geochronologic boundary , Concept experimental
Base of GS-2.1a f205a912-0dfe-4fff-a11c-ed3addacce4b Concept , era boundary , geochronologic boundary experimental
Base of Campanian f2550924-4c9e-47c6-a7e9-980b78477666 Concept , geochronologic boundary , era boundary experimental
Base of Westphalian f4bd4ab9-4446-491a-95ec-801690594e99 Concept , era boundary , geochronologic boundary experimental
Base of Glacial c f52c6b35-8bc4-46ce-8f25-dc590abfc570 era boundary , Concept , geochronologic boundary experimental
End of Arenig f5c8a387-cee8-4ed1-a5a0-8e03f651d4aa Concept , era boundary , geochronologic boundary experimental
Base of Botomian f61e4523-58c6-4079-9a09-4575b5d716fc Concept , geochronologic boundary , era boundary experimental
End of Assian f6383a4b-4789-4864-8c2a-7fa30d361d4b geochronologic boundary , Concept , era boundary experimental
Base of Fuhne f64ad56b-9393-4c27-bd84-b2c3a7ad5608 geochronologic boundary , era boundary , Concept experimental
Base of Biber/Donau Interglacial f7585555-05b5-4b49-8f8e-e4341c87565a geochronologic boundary , Concept , era boundary experimental
Base of GI-8a f7980959-5626-4218-884a-a3500bf2f7ad Concept , era boundary , geochronologic boundary experimental
Base of GS-13 f813c726-a925-40f9-8675-a779459d0ee4 era boundary , geochronologic boundary , Concept experimental
Base of Llandeilo f8373fb1-1df4-4905-90f3-077b5323ed86 geochronologic boundary , Concept , era boundary experimental
Base of GI-24.2 f96a4534-87a6-49e0-8093-e5a516b6cd3f era boundary , Concept , geochronologic boundary experimental
Base of Middle Anisian f98a62a2-8be6-4fd6-998e-047d0d15823e era boundary , Concept , geochronologic boundary experimental
End of Livian fa022821-a442-4f09-8f5b-300e2a11bdf1 geochronologic boundary , Concept , era boundary experimental
Base of Upper Rhaetian fad59383-9a2b-481e-9d24-b4e602b418d4 era boundary , geochronologic boundary , Concept experimental
End of Sequanian fb55c547-f7e9-4ed3-8eae-5bf89b5f2df4 geochronologic boundary , era boundary , Concept experimental
Base of Santonian fcf9d7cf-2adc-40b0-b1a2-39b71532b4ad geochronologic boundary , Concept , era boundary experimental
Base of Würm III fef3965c-305a-4b2f-a15d-e1e1b143a567 era boundary , geochronologic boundary , Concept experimental
Base of Astartian ff42cf51-6e3d-4d78-b687-ab8add2218e1 Concept , era boundary , geochronologic boundary experimental
Base of Drumian ff72c4d5-4dab-4a91-9bb4-9292f1d36ab9 geochronologic boundary , era boundary , Concept experimental
Base of Stephanian B ffc83f7b-0753-4980-9c25-cde9b45f5bee era boundary , Concept , geochronologic boundary experimental