Suborder:
|
Agoniatitina
|
Superfamily:
|
Mimoceratoidea
|
Family:
|
Teicherticeratidae
|
Subfamily:
|
Palaeogoniatitinae
|
Genus:
|
Irdanites |
Qualifier:
|
ge |
Author:
|
Klug 2001,p.506
|
Lower Boundary:
|
CZB zlichovensis Zone base [di97:10,80], 406.7 million years
|
Upper Boundary:
|
CZB zlichovensis-barrandei [12,50], 405.5 million years
|