TaxNo: 2624Pachylyroceras hyatti
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoglyphioceratoidea
|
| Family: |
Cravenoceratidae
|
| Subfamily: |
Cravenoceratinae
|
| Genus: |
Pachylyroceras
|
| Species: | hyatti |
| Qualifier: | ss |
| Author: |
Gordon 1965,p.198
|
| Lower Boundary: |
UTX Barnett Fm. base, 326.4 million years
|
| Upper Boundary: |
UTX Barnett Fm. top, 323 million years
|