Suborder:
|
Tornoceratina
|
Superfamily:
|
Prionoceratoidea
|
Family:
|
Prionoceratidae
|
Subfamily:
|
Prionoceratinae
|
Genus:
|
Mimimitoceras?
|
Species:
|
opimum |
Qualifier:
|
ss |
Author:
|
White & Whitfield 1862,p.305
|
Lower Boundary:
|
UIA Chonopectus base, 366 million years
|
Upper Boundary:
|
UIA Chonopectus top, 359.6 million years
|