Suborder:
|
Goniatitina
|
Superfamily:
|
Neodimorphoceratoidea
|
Family:
|
Neodimorphoceratidae
|
Genus:
|
Politoceras
|
Species:
|
jacksoni |
Qualifier:
|
sy |
Author:
|
Bisat 1930,p.80
|
Valid:
|
Politoceras politum (Shumard 1863) |
Lower Boundary:
|
Duckmantian--Bolsovian, Westphal.B--C, 310.6 million years
|
Upper Boundary:
|
Bolsovian--Westphalian D,Westphal.C--D, 309.5 million years
|