TaxNo: 5111Genus Liuchengoceras
| Suborder: |
Paraceltitina
|
| Superfamily: |
Xenodiscoidea
|
| Family: |
Liuchengoceratidae
|
| Genus: | Liuchengoceras |
| Qualifier: | gy |
| Author: |
Zhao et al. 1978,p.110
|
| Valid: |
Pseudotirolites Sun [TAX5119] |
| Lower Boundary: |
Paratirol./Shevyrev.--Pseudosteph./Tap., 253 million years
|
| Upper Boundary: |
Pseudosteph./Tap.--Pseudotir./Pleuron., 252.5 million years
|