TaxNo: 3429Genus Beleutoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Nomismoceratoidea
|
| Family: |
Nomismoceratidae
|
| Genus: | Beleutoceras |
| Qualifier: | ge |
| Author: |
Ruzhencev & Bog. 1971,p.164
|
| Lower Boundary: |
RUS Nm1b1--Nm1b2 (Domb.carinat.--tectus), 324.6 million years
|
| Upper Boundary: |
RUS Nm1b2--Nm1c1,Fayettevillea-Delepinoc, 324 million years
|