| Suborder: |
Goniatitina
|
| Superfamily: |
Neoglyphioceratoidea
|
| Family: |
Cravenoceratidae
|
| Subfamily: |
Cravenoceratinae
|
| Genus: |
Lyrogoniatites
|
| Species: | sp. |
| Qualifier: | in |
| Author: |
div. authors
|
| Lower Boundary: |
DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
|
| Upper Boundary: |
DER lowest E1--E1 alpha, 326 million years
|
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