Suborder:
|
Goniatitina
|
Superfamily:
|
Thalassoceratoidea
|
Family:
|
Thalassoceratidae
|
Subfamily:
|
Thalassoceratinae
|
Genus:
|
Prothalassoceras
|
Species:
|
dieneri |
Qualifier:
|
ss |
Author:
|
Smith 1927,p.24
|
Lower Boundary:
|
RIT Bitauni beds base, 275.6 million years
|
Upper Boundary:
|
RIT Bitauni beds top, 270.6 million years
|