Gyronchus

Gyronchus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Vertebrata
Infraphylum:	Gnathostomata
Superclass:	Osteichthyes
Class:	Actinopterygii
Order:	Pycnodontiformes
Genus:	Gyronchus

Gyronchus is an extinct genus of prehistoric ray-finned fish from the Jurassic.

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Wikipedia