| Gnathorhiza Temporal range: Late Carboniferous to Early Triassic
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| Restoration | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Class: | Dipnoi |
| Order: | Ceratodontiformes |
| Family: | †Gnathorhizidae |
| Genus: | †Gnathorhiza Cope, 1883 |
| Type species | |
| †Gnathorhiza serrata Cope, 1883
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| Species | |
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Gnathorhiza is an extinct genus of prehistoric lobe-finned fish (lungfish) which lived from the Carboniferous period to the Early Triassic epoch.[1] It is the only known lungfish genus to have crossed the Permo-Triassic boundary. Several species have been described, ranging in size from 5 to 50 centimeters.[2]
- ^ Carlson, Keith J. (1968). "The Skull Morphology and Estivation Burrows of the Permian Lungfish, Gnathorhiza Serrata". The Journal of Geology. 76 (6): 641–663. Bibcode:1968JG.....76..641C. doi:10.1086/627389. JSTOR 30066273. S2CID 129493320.
- ^ Skrzycki, P. (2016-01-15). "The westernmost occurrence of Gnathorhiza in the Triassic, with a discussion of the stratigraphic and palaeogeographic distribution of the genus". Fossil Record. 19 (1): 17–29. doi:10.5194/fr-19-17-2016. ISSN 2193-0074.