TaxNo: 5110Family Liuchengoceratidae
| Suborder: |
Paraceltitina
|
| Superfamily: |
Xenodiscoidea
|
| Family: | Liuchengoceratidae |
| Qualifier: | fa |
| Author: |
Zhao et al. 1978,p.109
|
| Lower Boundary: |
Paratirol./Shevyrev.--Pseudosteph./Tap., 253 million years
|
| Upper Boundary: |
Pseudosteph./Tap.--Pseudotir./Pleuron., 252.5 million years
|