experimental
Définition
broader |
Lower Devonian
|
has beginning |
Base of Pragian
|
has end |
Base of Emsian
|
in scheme |
Chronostratigraphy / Geochronology
|
is gSSA |
false
|
is gSSP |
true
|
label |
Praguien
| Pragian
|
mnemo |
PRAG
|
narrower |
Upper Pragian
| Lower Pragian
|
nature |
Référent
|
notation |
d2
|
pref label |
Praguien
| Pragian
|
rgb coordinate blue |
104
|
rgb coordinate green |
196
|
rgb coordinate red |
229
|
source |
Godefroid et al, 1994. Mém. Serv. Géol. Belgique n°38; Dejonghe al. 2006 Geologica Belgica vol.9 1-2
|
spatial |
Monde
|
status |
Valid
|
type |
Concept
|
type chronostrat age |
Stage
|
type geochrono age |
Age
|