TaxNo: 5727Genus Neogastrioceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoglyphioceratoidea
|
| Family: |
Cravenoceratidae
|
| Subfamily: |
Cravenoceratinae
|
| Genus: | Neogastrioceras |
| Qualifier: | gy |
| Author: |
Nassichuk 1975,p.95
|
| Valid: | Syngastrioceras Librovich,1938, p.81* |
| Lower Boundary: |
Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
|
| Upper Boundary: |
U Atokan--Desmoinesian [ATO--DES], 308.6 million years
|