Suborder:
|
Goniatitina
|
Superfamily:
|
Shumarditoidea
|
Family:
|
Parashumarditidae
|
Genus:
|
Eovidrioceras
|
Species:
|
bulakense |
Qualifier:
|
ss |
Author:
|
Popov 1992,p.53
|
Lower Boundary:
|
Kasimovian--Gzhelian [KAS--GZE], 303.9 million years
|
Upper Boundary:
|
RUS lower--upper Gzhelian, 301 million years
|