| Suborder: |
Tornoceratina
|
| Superfamily: |
Prionoceratoidea
|
| Family: |
Gattendorfiidae
|
| Genus: |
Zadelsdorfia
|
| Species: | acricula |
| Qualifier: | ss |
| Author: |
Ruan 1995,p.416
|
| Lower Boundary: |
low.Tournais.--mid.Tournais. [Tn1--Tn2], 357.5 million years
|
| Upper Boundary: |
G.typicus--anchoralis-latus Z. base [0, 349 million years
|
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