Suborder:
|
Goniatitina
|
Superfamily:
|
Cycloloboidea
|
Family:
|
Cyclolobidae
|
Subfamily:
|
Cyclolobinae
|
Genus:
|
Demarezites
|
Species:
|
oyensi+ |
Qualifier:
|
ss |
Author:
|
Gerth 1950,p.250
|
Lower Boundary:
|
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
Upper Boundary:
|
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|