TaxNo: 227Imitoceras propinquus
| Suborder: |
Tornoceratina
|
| Superfamily: |
Prionoceratoidea
|
| Family: |
Prionoceratidae
|
| Subfamily: |
Prionoceratinae
|
| Genus: |
Imitoceras
|
| Species: | propinquus |
| Qualifier: | ss |
| Author: |
Winchell 1862,p.365
|
| Lower Boundary: |
UMI Marshall Sdst.II base, 353 million years
|
| Upper Boundary: |
UMI Marshall Sdst.II top, 351 million years
|