Ptyktoptychion
Extinct genus of cartilaginous fishes From Wikipedia, the free encyclopedia
Ptyktoptychion is an extinct genus of chimaeras known from the Early Cretaceous of Australia.[1]
| Ptyktoptychion Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Holocephali |
| Order: | Chimaeriformes |
| Family: | Callorhinchidae |
| Genus: | †Ptyktoptychion Lees, 1986 |
| Species | |
| |
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