Suborder:
|
Goniatitina
|
Superfamily:
|
Shumarditoidea
|
Family:
|
Eoshumarditidae
|
Genus:
|
Eoshumardites
|
Species:
|
tiargensis |
Qualifier:
|
ss |
Author:
|
Klets 1993,p.33
|
Lower Boundary:
|
Kasimovian--Gzhelian [KAS--GZE], 303.9 million years
|
Upper Boundary:
|
Gzhelian--Asselian [C--P], 299 million years
|