TaxNo: 5880Family Hyattoceratidae
| Suborder: |
Goniatitina
|
| Superfamily: |
Marathonitoidea
|
| Family: | Hyattoceratidae |
| Qualifier: | fa |
| Author: |
Miller & Furnish 1957,p.L53
|
| Lower Boundary: |
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
| Upper Boundary: |
RIT Amarassi beds top, 258 million years
|