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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: | |
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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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