Suborder:
|
Goniatitina
|
Superfamily:
|
Gastrioceratoidea
|
Family:
|
Gastrioceratidae
|
Genus:
|
Cancelloceras
|
Subgenus:
|
Crencelloceras
|
Species:
|
cumbriense |
Qualifier:
|
ss |
Author:
|
Bisat 1924,p.121
|
Lower Boundary:
|
GBY rurae--aff. crenulatum, 313.4 million years
|
Upper Boundary:
|
GBY aff. crenulatum--cumbriense, 313.2 million years
|