Suborder:
|
Goniatitina
|
Superfamily:
|
Cycloloboidea
|
Family:
|
Vidrioceratidae
|
Genus:
|
Stacheoceras?
|
Species:
|
tridens forma epsilon |
Qualifier:
|
ss |
Author:
|
Haniel 1915,p.104
|
Lower Boundary:
|
RIT Bitauni beds base, 275.6 million years
|
Upper Boundary:
|
RIT Bitauni beds top, 270.6 million years
|