TaxNo: 2256Pachylyroceras cloudi+
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoglyphioceratoidea
|
| Family: |
Cravenoceratidae
|
| Subfamily: |
Cravenoceratinae
|
| Genus: |
Pachylyroceras
|
| Species: | cloudi+ |
| Qualifier: | ss |
| Author: |
Miller & Youngquist 1948,p.660
|
| Lower Boundary: |
UTX Barnett Fm. base, 326.4 million years
|
| Upper Boundary: |
UTX Barnett Fm. top, 323 million years
|