Suborder:
|
Tornoceratina
|
Superfamily:
|
Prionoceratoidea
|
Family:
|
Prionoceratidae
|
Subfamily:
|
Prionoceratinae
|
Genus:
|
Sulcimitoceras |
Qualifier:
|
gy |
Author:
|
Kuzina 1985,p.46
|
Valid:
|
Acutimitoceras (Stockumites) Becker,1996 |
Lower Boundary:
|
UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years
|
Upper Boundary:
|
Devonian--Carboniferous Boundary [DCB], 359.2 million years
|