TaxNo: 2470Cancelloceras (Cancelloceras) contractum
| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Gastrioceratidae
|
| Genus: |
Cancelloceras
|
| Subgenus: |
Cancelloceras
|
| Species: | contractum |
| Qualifier: | ss |
| Author: |
Ruzhencev & Bog. 1978,p.292
|
| Lower Boundary: |
RUS Nm2c1--Nm2c2 (V.vern.--B.superbil.), 314.2 million years
|
| Upper Boundary: |
RUS Nm2c2 top;Biling./Canc.--Bran./Gast., 313 million years
|