TaxNo: 921Maeneceras biferum subvaricatum
| Suborder: |
Tornoceratina
|
| Superfamily: |
Praeglyphioceratoidea
|
| Family: |
Sporadoceratidae
|
| Genus: |
Maeneceras
|
| NomSpecies: |
biferum
|
| Species: | subvaricatum |
| Qualifier: | ss |
| Author: |
Sobolev 1914,p.35
|
| Lower Boundary: |
UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
|
| Upper Boundary: |
P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|