TaxNo: 3789Family Girtyoceratidae
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: | Girtyoceratidae |
| Qualifier: | fa |
| Author: |
Wedekind 1918,p.139
|
| Lower Boundary: |
UMI Marshall Sdst.I base, 349 million years
|
| Upper Boundary: |
RUS Nm1c2--Nm2a1, Homoc.-Hudsonoc.GZ, 318.1 million years
|