Suborder:
|
Goniatitina
|
Superfamily:
|
Pericycloidea
|
Family:
|
Muensteroceratidae
|
Genus:
|
Cowdaleoceras |
Qualifier:
|
gy |
Author:
|
Bisat 1952,p.166
|
Valid:
|
Girtyoceras Wedekind,1918,p.140 |
Lower Boundary:
|
Up.Visean Goniatites BZ base [up.VIS], 333.5 million years
|
Upper Boundary:
|
DER Go alpha 3--Go alpha 4 [13.00], 332 million years
|