TaxNo: 6593Family Qiannanitidae
| Suborder: |
Tornoceratina
|
| Superfamily: |
Karagandoceratoidea
|
| Family: | Qiannanitidae |
| Qualifier: | fy |
| Author: |
Becker 1993,fig.7.7
|
| Valid: |
Prodromitidae Arthaber TAX5691 |
| Lower Boundary: |
Devonian--Carboniferous Boundary [DCB], 359.2 million years
|
| Upper Boundary: |
low.Tournais.--mid.Tournais. [Tn1--Tn2], 357.5 million years
|