Suborder:
|
Goniatitina
|
Superfamily:
|
Pericycloidea
|
Family:
|
Pericyclidae
|
Subfamily:
|
Ammonellipsitinae
|
Genus:
|
Ammonellipsites
|
Species:
|
grandicostatus |
Qualifier:
|
ss |
Author:
|
Librovitch 1927,p.23
|
Lower Boundary:
|
KIT Dzhapryk Fm. base F1, 348 million years
|
Upper Boundary:
|
KIT Dzhapryk Fm. A4 top, 345 million years
|