TaxNo: 5992Genus Quasitirolites
| Suborder: |
Paraceltitina
|
| Superfamily: |
Xenodiscoidea
|
| Family: |
Xenodiscidae
|
| Genus: | Quasitirolites |
| Qualifier: | gy |
| Author: |
Bychkov 1984,p.70
|
| Valid: | Tompophiceras Popov,1961,p.26 |
| Lower Boundary: |
Permian--Triassic (Induan base), 251 million years
|
| Upper Boundary: |
Griesbachian--Dienerian [GRI--DIE], 250.3 million years
|