Suborder:
|
Agoniatitina
|
Superfamily:
|
Agoniatitoidea
|
Family:
|
Agoniatitidae
|
Genus:
|
Agoniatites
|
Species:
|
euryomphalus |
Qualifier:
|
sy |
Author:
|
Holzapfel 1895,p.65
|
Valid:
|
Agoniatites costulatus (Arch. & V. 1842) |
Lower Boundary:
|
MD2A--MD2B: undul.--molarium Z. [13,00], 390.6 million years
|
Upper Boundary:
|
mid.--up.varcus Zone [17,00], 389 million years
|