Sphodrosaurus
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| Sphodrosaurus Temporal range: Late Triassic,
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| Genus: | †Sphodrosaurus Colbert, 1960
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| Binomial name | |
| †Sphodrosaurus pennsylvanicus Colbert, 1960
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Sphodrosaurus[1][2] is an extinct genus of basal Eosuchian from the Late Triassic-aged New Oxford Formation (not the Brunswick Formation as intially suggested) of Pennsylvania. The type species is S. pennsylvanicus, described by Edwin Colbert in 1960.[3] The holotype (NMN 2321; the cast is listed under AMNH 7601) consists of a partial skeleton including the back of the skull, the spinal column, all of the ribs, all of the hindlimbs and part of the upper forelimbs; Sphodrosaurus was originally believed to have been a member of the Procolophonidae and then a dinosaur,[3] while now Sphodrosaurus is believed to be a basal member of the Eosuchia, by most authors starting with Sues et al. (1993),[4], or a member of the Rhynchosauria (Baird, 1986[5]), although Rice et al. (2016) suggested it could have been a possible early stem-turtle (assumption based upon Sclerosaurus).[6]
References
- ^ "Sphodrosaurus Colbert, 1960". www.gbif.org. GBIF. Retrieved 2021-04-25.
- ^ "Fossilworks: Sphodrosaurus". fossilworks.org. Fossilworks. Retrieved 2021-04-25.
- ^ a b Colbert, E. H. (1960). A New Triassic Procolophonid from Pennsylvania. American Museum Novitates 2022:1-19
- ^ Sues, H-D., Baird, D., and Olsen, P.E. (1993). Redescription of Sphodrosaurus pennsylvanicus Colbert, 1960 (Reptilia) and a Reassessment of its Affinities. Annals of Carnegie Museum 62(3):245-253
- ^ Baird, D. (1986). Some Upper Triassic reptiles, footprints and an amphibian from New Jersey. The Mosasaur 3:125-153
- ^ Rice, Ritva; Kallonen, Aki; Cebra-Thomas, Judith; Gilbert, Scott F. (2016-04-25). "Development of the turtle plastron, the order-defining skeletal structure". Proceedings of the National Academy of Sciences. 113 (19): 5317–5322. doi:10.1073/pnas.1600958113. ISSN 0027-8424.
Category:Prehistoric reptile taxonomy Category:Late Triassic extinctions
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