TaxNo: 4942Cluthoceras contractum
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Muensteroceratidae
|
| Genus: |
Cluthoceras
|
| Species: | contractum |
| Qualifier: | ss |
| Author: |
Gao 1983,p.460
|
| Lower Boundary: |
RUS Nm1a1 base, Hypergon.-Ferganoc. GZ, 327.8 million years
|
| Upper Boundary: |
RUS Nm1b2--Nm1c1,Fayettevillea-Delepinoc, 324 million years
|