TaxNo: 4173Metalegoceras crenatum
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoicoceratoidea
|
| Family: |
Metalegoceratidae
|
| Subfamily: |
Metalegoceratinae
|
| Genus: |
Metalegoceras
|
| Species: | crenatum |
| Qualifier: | ss |
| Author: |
Nassichuk et al. 1965,p.27
|
| Lower Boundary: |
TAP Kochusu Fm. base, 270.6 million years
|
| Upper Boundary: |
Kochusu Fm.,lower,basal lst.--lower part, 270.3 million years
|