| Unguinychus Temporal range: Late Triassic,
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | †Drepanosauromorpha |
| Family: | †Drepanosauridae |
| Genus: | †Unguinychus Pugh et al., 2024 |
| Species: | †U. onyx
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| Binomial name | |
| †Unguinychus onyx Pugh et al., 2024
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Unguinychus (meaning "claw claw") is an extinct genus of drepanosaurid reptiles from the Late Triassic Garita Creek Formation of New Mexico, United States. The genus contains a single species, U. onyx, known from several partial claws. In contrast to some of its relatives that may have been arboreal, Unguinychus may have been a more fossorial species.[1] Based on the morphology of the claws, Unguinychus appears to be most similar to Skybalonyx, another possibly fossorial drepanosaur from the Chinle Formation of Arizona.[2]
- ^ Pugh, Isaac; Nesbitt, Sterling J.; Heckert, Andrew B.; Lauer, René; Lauer, Bruce (2024-07-04). "A new drepanosauromorph (Diapsida) from East–Central New Mexico and diversity of drepanosaur morphology and ecology at the Upper Triassic Homestead Site at Garita Creek (Triassic: mid-Norian)". Journal of Vertebrate Paleontology. doi:10.1080/02724634.2024.2363202. ISSN 0272-4634.
- ^ Jenkins, X.A.; Pritchard, A.C.; Marsh, A.D.; Kligman, B.T.; Sidor, C.A.; Reed, K.E. (2020). "Using manual ungual morphology to predict substrate use in the Drepanosauromorpha and the description of a new species". Journal of Vertebrate Paleontology. 40 (5): e1810058. Bibcode:2020JVPal..40E0058J. doi:10.1080/02724634.2020.1810058.