TaxNo: 5985Tompophiceras gracile
| Suborder: |
Paraceltitina
|
| Superfamily: |
Xenodiscoidea
|
| Family: |
Xenodiscidae
|
| Genus: |
Tompophiceras
|
| Species: | gracile |
| Qualifier: | ss |
| Author: |
Spath 1930,p.34
|
| Lower Boundary: |
Permian--Triassic (Induan base), 251 million years
|
| Upper Boundary: |
Griesbachian--Dienerian [GRI--DIE], 250.3 million years
|