Suborder:
|
Anarcestina
|
Superfamily:
|
Triainoceratoidea
|
Family:
|
Maenioceratidae
|
Genus:
|
Maenioceras |
Qualifier:
|
ge |
Author:
|
Schindewolf 1933,p.104
|
Lower Boundary:
|
ensensis--hemiansatus Zone [08,20], 391.8 million years
|
Upper Boundary:
|
MAR one alpha 1-- one alpha 2 of Bensaid, 388 million years
|