TaxNo: 5118Family Pseudotirolitidae
| Suborder: |
Paraceltitina
|
| Superfamily: |
Xenodiscoidea
|
| Family: | Pseudotirolitidae |
| Qualifier: | fa |
| Author: |
Chao et al. 1965
|
| Lower Boundary: |
Paratirol./Shevyrev.--Pseudosteph./Tap., 253 million years
|
| Upper Boundary: |
Rotodiscoceras top, 251.5 million years
|