Sphodrosaurus

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Sphodrosaurus
Temporal range: Late Triassic,
~230–205.6 Ma
Sphodrosaurus pennsylvanicus Colbert, 1960.jpg
Fossil
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Sauropsida
Subclass:
Diapsida
Order:
Eosuchia
Genus:
†Sphodrosaurus

Colbert, 1960
Binomial name
†Sphodrosaurus pennsylvanicus
Colbert, 1960

Sphodrosaurus[1][2] is an extinct genus of basal Eosuchian reptiles from the Late Triassic-aged New Oxford Formation (not the Brunswick Formation as initially 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[]

  1. ^ "Sphodrosaurus Colbert, 1960". www.gbif.org. GBIF. Retrieved 2021-04-25.
  2. ^ "Fossilworks: Sphodrosaurus". fossilworks.org. Fossilworks. Retrieved 17 December 2021.
  3. ^ a b Colbert, E. H. (1960). A New Triassic Procolophonid from Pennsylvania. American Museum Novitates 2022:1-19
  4. ^ 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
  5. ^ Baird, D. (1986). Some Upper Triassic reptiles, footprints and an amphibian from New Jersey. The Mosasaur 3:125-153
  6. ^ 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. Bibcode:2016PNAS..113.5317R. doi:10.1073/pnas.1600958113. ISSN 0027-8424. PMC 4868452. PMID 27114549.
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