| Libognathus Temporal range: Late Triassic
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | †Parareptilia |
| Order: | †Procolophonomorpha |
| Family: | †Procolophonidae |
| Tribe: | †Leptopleuronini |
| Genus: | †Libognathus Small, 1997 |
| Type species | |
| †Libognathus sheddi Small, 1997
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Libognathus (meaning "southwest jaw" in Greek) is an extinct genus of procolophonid parareptile from the Late Triassic of Texas. The type and only species, Libognathus sheddi, was named in 1997 from the Cooper Canyon Formation in the fossil-rich Post Quarry, which is found in Garza County. Libognathus was the first definite procolophonid discovered in the southwestern United States, although another possible procolophonid called Chinleogomphius was reported from the southwest before Libognathus was named.[1]
- ^ Small, B. J. (1997). "A new procolophonid from the Upper Triassic of Texas, with a description of tooth replacement and implantation". Journal of Vertebrate Paleontology. 17 (4): 674–678. doi:10.1080/02724634.1997.10011016.