Suborder:
|
Agoniatitina
|
Superfamily:
|
Agoniatitoidea
|
Family:
|
Agoniatitidae |
Qualifier:
|
fa |
Author:
|
Holzapfel 1899,p.12
|
Lower Boundary:
|
CZB elegans--cancellata Zone [14,20], 404 million years
|
Upper Boundary:
|
mid.--up.varcus Zone [17,00], 389 million years
|