Suborder:
|
Goniatitina
|
Superfamily:
|
Neoglyphioceratoidea
|
Family:
|
Cravenoceratidae
|
Subfamily:
|
Nuculoceratinae
|
Genus:
|
Nuculoceras?
|
Species:
|
djeradae |
Qualifier:
|
ss |
Author:
|
Delépine 1941,p.80
|
Lower Boundary:
|
Yeadonian--Langsettian, Westph.A [YEA--, 313 million years
|
Upper Boundary:
|
Duckmantian--Bolsovian, Westphal.B--C, 310.6 million years
|