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The first record of a neonatal ornithopod dinosaur from Gondwana

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  • معلومة اضافية
    • بيانات النشر:
      Elsevier Science
    • Collection:
      CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
    • نبذة مختصرة :
      Discrete post-embryonic teeth and bone fragments have been recovered from the matrix with the holotype skeleton (MPM‐10001) of the ornithopod dinosaur, Talenkauen santacrucensis Novas et al., 2004 (Upper Cretaceous, Argentina). The minute tooth crowns are 1 mmapicobasally tall and 1.7 mmmesodistally wide. The crowns are symmetrical and have a centrally located primary ridge on the lingual surface. Secondary ridges lead to five marginal denticles on both teeth. The tooth morphology is consistent with dentary teeth in euiguanodontids. There is no evidence of transport, suggesting that the material is autochthonous with respect to the adult body block of T. santacrucensis (MPM‐10001). Steeply inclined wear facets on the lingual surface and associated microstriae support the conclusion that the minute teeth were from a post-embryonic euiguanodontid dinosaur rather than early stage replacement teeth. The morphology, size, and wear of the teeth and small bone fragments found in the body block ofMPM‐10001 suggest that this material belongs to a neonatal T. santacrucensis. This is the first record of neonatal ornithopod remains from Gondwana. ; Fil: Egerton, Victoria M. . Drexel University; Estados Unidos. University Of Manchester; Reino Unido ; Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales; Argentina ; Fil: Dodson, Peter. State University Of Pennsylvania; Estados Unidos ; Fil: Lacovara, Kenneth. Drexel University; Estados Unidos
    • File Description:
      application/pdf
    • ISSN:
      1342-937X
    • Relation:
      info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1342937X12002870; http://hdl.handle.net/11336/8680; Egerton, Victoria M.; Novas, Fernando Emilio; Dodson, Peter; Lacovara, Kenneth; The first record of a neonatal ornithopod dinosaur from Gondwana; Elsevier Science; Gondwana Research; 23; 1; 3-9-2013; 268-271
    • الدخول الالكتروني :
      http://hdl.handle.net/11336/8680
    • Rights:
      info:eu-repo/semantics/openAccess ; https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
    • الرقم المعرف:
      edsbas.8BCB0EF3