Klastomycter conodentatus, gen et sp. nov., a small early Permian parareptile with conical teeth from Richards Spur, Oklahoma

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dc.contributor.authorReisz, RRen_AU
dc.contributor.authorRowe, DCTen_AU
dc.contributor.authorBevitt, JJen_AU
dc.date.accessioned2026-01-08T05:15:45Zen_AU
dc.date.available2026-01-08T05:15:45Zen_AU
dc.date.issued2024-11-19en_AU
dc.date.statistics2025-04-03en_AU
dc.description.abstractA small, pristinely preserved specimen recently collected from the Dolese Brothers limestone quarry near Richards Spur, Oklahoma provides evidence for the presence of a new early Permian parareptile at this locality. The specimen includes an articulated, nearly complete skull roof, and with the right premaxilla, right quadratojugal, most of the right palate, as well as the right epipterygoid and the sphenethmoid preserved inside. Although similar in many respects to the other contemporary parareptiles Acleistorhinus, Delorhynchus and Colobomycter, it can be distinguished from other acleistorhinids by the presence of a number of autapomorphies related to its dentition. Phylogenetic analysis places it closer to Delorhynchus and Colobomycter within Acleistorhinidae than to Acleistorhinus pteroticus. Unique aspects of the present specimen include the pronounced anterior extension of the lacrimal bone, largely homodont dentition composed of simple conical crowns with slight recurvature in the premaxillary and anterior maxillary teeth, and simple conical crowns in posterior maxillary dentition. The discovery of this new parareptile along with the surprisingly large number of acleistorhinids at Richards Spur highlights the importance of the unique fissure and vertical cave system at this site. No other early Permian site has provided such a wide diversity of parareptilian taxa, part of a complex community of terrestrial vertebrates. The present specimen highlights the fine niche partitioning that appears to have been present among reptiles of this region. © 2024 Reisz et al. Distributed under Creative Commons CC-BY-NC 4.0en_AU
dc.description.sponsorshipThis work was supported by a Natural Sciences and Engineering Research Council Discovery Grant (RGPIN-2020-04959) as well as funding from the University of Toronto and Jilin University. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.en_AU
dc.format.mediumElectronic-eCollectionen_AU
dc.identifier.articlenumbere18393en_AU
dc.identifier.citationReisz, R. R., Rowe, D. C. T., & Bevitt, J. J. (2024). Klastomycter conodentatus, gen et sp. nov., a small early Permian parareptile with conical teeth from Richards Spur, Oklahoma. PeerJ, 12, e18393. doi:10.7717/peerj.18393en_AU
dc.identifier.issn2167-8359en_AU
dc.identifier.journaltitlePeerJen_AU
dc.identifier.urihttps://doi.org/10.7717/peerj.18393en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16851en_AU
dc.identifier.volume12en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherPeerJen_AU
dc.subjectOklahomaen_AU
dc.subjectPermian Perioden_AU
dc.subjectReptilesen_AU
dc.subjectFossilsen_AU
dc.subjectPaleontologyen_AU
dc.subjectTeethen_AU
dc.subjectBone jointsen_AU
dc.subjectArchaeological specimensen_AU
dc.subjectVertebratesen_AU
dc.subjectCavesen_AU
dc.titleKlastomycter conodentatus, gen et sp. nov., a small early Permian parareptile with conical teeth from Richards Spur, Oklahomaen_AU
dc.typeJournal Articleen_AU
dcterms.dateAccepted2024-10-03en_AU
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