| Suborder: |
Paraceltitina
|
| Superfamily: |
Xenodiscoidea
|
| Family: |
Pseudotirolitidae
|
| Genus: |
Pseudotirolites
|
| Species: | quixianensis |
| Qualifier: | ss |
| Author: |
Zhao et al. 1978,p.127
|
| Lower Boundary: |
Paratirol./Shevyrev.--Pseudosteph./Tap., 253 million years
|
| Upper Boundary: |
Rotodiscoceras top, 251.5 million years
|
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