TaxNo: 5387Family Schistoceratidae
| Suborder: |
Goniatitina
|
| Superfamily: |
Schistoceratoidea
|
| Family: | Schistoceratidae |
| Qualifier: | fa |
| Author: |
Schmidt 1929,p.75
|
| Lower Boundary: |
U Halian--Bloydian, Brentwood base, 313 million years
|
| Upper Boundary: |
Gzhelian--Asselian [C--P], 299 million years
|