Otischalkia is an extinct genus of archosauromoph from late Triassic (late Carnian stage) deposits of Howard County, Texas, US It is known from the holotype TMM 31025-263, left humerus and from the referred specimens TMM 31025-262, TMM 31025-266, TMM 31025-264, TMM 31185-92 and TMM 31185-93. It was found in the Lower Dockum Group near the abandoned settlement of Otis Chalk. It was first named by Adrian P. Hunt and Spencer G. Lucas in 1991 and the type species is Otischalkia elderae.[1]
| Otischalkia Temporal range:
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Archosauromorpha |
| Clade: | †Allokotosauria |
| Family: | †Azendohsauridae |
| Subfamily: | †Malerisaurinae |
| Genus: | †Otischalkia Hunt & Lucas, 1991 |
| Species | |
Originally described as a rhynchosaur, several recent studies found O. elderae to represent a nomen dubium.[2][3][4] Nesbitt et al. (2021) came to the conclusion that the holotype of Otischalkia actually belongs to an azendohsaurid, specifically a malerisaurine.[5]
References
edit- ^ Adrian P. Hunt; Spencer G. Lucas (1991). "A new Rhynchosaur from the Upper Triassic of West Texas, and the Biochronology of Late Triassic Rhyncosaurs". Palaeontology. 34 (4): 927–938.
- ^ Mukherjee, Debarati; Ray, Sanghamitra (2014). "A new Hyperodapedon(Archosauromorpha, Rhynchosauria) from the Upper Triassic of India: Implications for rhynchosaur phylogeny". Palaeontology. 57 (6): 1241–1276. Bibcode:2014Palgy..57.1241M. doi:10.1111/pala.12113. S2CID 86195905.
- ^ Ezcurra, Martín D.; Montefeltro, Felipe; Butler, Richard J. (2016). "The Early Evolution of Rhynchosaurs". Frontiers in Ecology and Evolution. 3: article 142. doi:10.3389/fevo.2015.00142. hdl:11336/44040.
- ^ Cesar Leandro Schultz; Max Cardoso Langer; Felipe Chinaglia Montefeltro (2016). "A new rhynchosaur from south Brazil (Santa Maria Formation) and rhynchosaur diversity patterns across the Middle-Late Triassic boundary". Paläontologische Zeitschrift. 90 (3): 593–609. Bibcode:2016PalZ...90..593S. doi:10.1007/s12542-016-0307-7. hdl:11449/161986. S2CID 130644209.
- ^ Nesbitt, Sterling J.; Stocker, Michelle R.; Ezcurra, Martín D.; Fraser, Nicholas C.; Heckert, Andrew B.; Parker, William G.; Mueller, Bill; Sengupta, Saradee; Bandyopadhyay, Saswati; Pritchard, Adam C.; Marsh, Adam D. (2021). Field, Daniel (ed.). "Widespread azendohsaurids (Archosauromorpha, Allokotosauria) from the Late Triassic of western USA and India". Papers in Palaeontology. 8 (1). doi:10.1002/spp2.1413. ISSN 2056-2799. S2CID 245049571.
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