Suborder:
|
Goniatitina
|
Superfamily:
|
Nomismoceratoidea
|
Family:
|
Entogonitidae
|
Genus:
|
Tetragonites |
Qualifier:
|
gh |
Author:
|
Kittl 1904,p.677
|
Valid:
|
Entogonites Kittl 1904,p.322 |
Lower Boundary:
|
DER Pe delta, nasutus Z. base [09.25], 334.5 million years
|
Upper Boundary:
|
UAK Alapah Lst. top, 326.4 million years
|