TaxNo: 2171Girtyoceras sp.M
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Girtyoceras
|
| Species: | sp.M |
| Qualifier: | of |
| Author: |
Moore 1946,p.417
|
| Lower Boundary: |
DER Go alpha 1--Go alpha 2 [11.00], 333 million years
|
| Upper Boundary: |
DER Go beta striatus--Go beta falcatus, 329.4 million years
|