TaxNo: 2603Eumorphoceras yatesae dimorph B
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Eumorphoceras
|
| Species: | yatesae dimorph B |
| Qualifier: | of |
| Author: |
Trevin 1970,p.40
|
| Lower Boundary: |
GBY E2a2--E2a3 (Eu.bisulcatum--yatesae), 323 million years
|
| Upper Boundary: |
GBY E2a3--E2b1(Eu.yatesae--Cr.edalensis), 322.5 million years
|