Suborder:
|
Anarcestina
|
Superfamily:
|
Triainoceratoidea
|
Family:
|
Maenioceratidae
|
Genus:
|
Maenioceras
|
Subgenus:
|
Maenioceras |
Qualifier:
|
gy |
Author:
|
Schindewolf 1933,p.104
|
Valid:
|
Maenioceras Schindewolf,1933,p.104 |
Lower Boundary:
|
ensensis--hemiansatus Zone [08,20], 391.8 million years
|
Upper Boundary:
|
mid.--up.varcus Zone [17,00], 389 million years
|