Kingdom Animalia Subphylum Vertebrata Class Acanthodii Rank Genus | Phylum Chordata Infraphylum Gnathostomata Order Ischnacanthiformes | |
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Similar Ischnacanthiformes, Acanthodiformes, Mesacanthus, Parexus, Brochoadmones | ||
Ischnacanthus is an extinct genus of fish in the class Acanthodii. Ischnacanthus lived during the Early Devonian period. Ischnacanthus has jaws but still retains small mosaic scales. They either had very small teeth or none. Fossils were found in Tillywhandland Quarry, Forfar, Scotland. Some species were of large size, up to 2 m in length.
References
Ischnacanthus Wikipedia(Text) CC BY-SA