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Temporal range: Late Devonian
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sarcopterygii
Subclass: Dipnoi
Order: Dipteriformes
Genus: Griphognathus

Griphognathus ("hook-jaw") is an extinct genus of lungfish from the late Devonian period of Europe and Australia.

Griphognathus was a specialized lungfish, about 60 centimetres (24 in) long, with an elongated snout. The lower jaw and palate were lined with tooth-like denticles. Like all other lungfish, its skin was covered by overlapping scales, and it had an asymmetrical tail.[1]



  1. ^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 45. ISBN 1-84028-152-9.