| Suborder: |
Anarcestina
|
| Superfamily: |
Beloceratoidea
|
| Family: |
Gephuroceratidae
|
| Subfamily: |
Gephuroceratinae
|
| Genus: |
Maternoceras
|
| Species: | crassum |
| Qualifier: | sh |
| Author: |
Wedekind 1913,p.66
|
| Valid: |
Maternoceras crassoides (Matern 1931) TAX1683 |
| Lower Boundary: |
DER do one beta base, 378.7 million years
|
| Upper Boundary: |
DER do one beta--do one gamma, 377.5 million years
|
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