Ptychotrygonidae
|
Ptychotrygon Temporal range: Cretaceous, 94.3–66 Ma |
|
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Order: | †Sclerorhynchiformes |
| Suborder: | †Sclerorhynchoidei |
| Family: | †Ptychotrygonidae |
| Genus: |
†Ptychotrygon Jaekel 1894 |
Ptychotrygon is a genus of sawfish-like Cretaceous ray whose fossils have been found worldwide. It is the only genus in the family Ptychotrygonidae.
...
Wikipedia