TaxNo: 3391Paraschistoceras costiferum
| Suborder: |
Goniatitina
|
| Superfamily: |
Schistoceratoidea
|
| Family: |
Schistoceratidae
|
| Genus: |
Paraschistoceras
|
| Species: | costiferum |
| Qualifier: | ss |
| Author: |
Plummer & Scott 1937,p.252
|
| Lower Boundary: |
UTX Graford Shale base, 305.6 million years
|
| Upper Boundary: |
UTX Graford Shale top, 305 million years
|