Subphylum Vertebrata Superclass Osteichthyes Rank Genus | Phylum Chordata Infraphylum Gnathostomata | |
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Similar Dapedium, Pholidophorus, Bobasatrania, Semionotus, Coccolepis | ||
Ptycholepis is an extinct genus of prehistoric ray-finned fish having the head and opercular bones ornamented with ridges of ganoin, minute teeth, and thick scales (which are much longer than deep and are grooved longitudinally on the outer side).
References
Ptycholepis Wikipedia(Text) CC BY-SA