Suborder:
|
Otoceratina
|
Family:
|
Araxoceratidae
|
Subfamily:
|
Araxoceratinae
|
Genus:
|
Pseudotoceras |
Qualifier:
|
ge |
Author:
|
Ruzhencev 1962,p.95
|
Lower Boundary:
|
AZB Araxoceras--Vedioceras beds, 256 million years
|
Upper Boundary:
|
AZB Vedioceras--Phisonites beds, 253.8 million years
|