| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Muensteroceratidae
|
| Genus: |
Beyrichoceratoides
|
| Species: | truncatum var.E3 |
| Qualifier: | sy |
| Author: |
Currie 1954,p.545
|
| Valid: | Eoglyphioceras truncatum (Phillips 1836) |
| Lower Boundary: |
DER Go alpha 2--Go alpha 3 [11.60], 332.3 million years
|
| Upper Boundary: |
DER Go alpha 3--Go alpha 4 [13.00], 332 million years
|
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