Tooth replacement in a sauropod premaxilla from the Upper Cretaceous of Patagonia, Argentina

Authors

  • Rodolfo A. Coria
  • Luis M. Chiappe

Abstract

Anatomy and tooth replacement mechanism observed in a sauropod dinosaur left premaxilla from the Late Cretaceous of Patagonia are described. The specimen is assigned to Neosauropoda, and with doubts to Titanosauridae, due the presence of a stepped anterior margin, and long and cylindrical teeth with no denticles. The specimen presents a dental settlement pattern performed by intra-alveolar packages of four dental elements, one functional and three germinals, which compose a comb-like arrangement only recorded in diplodocid and titanosaurid sauropods.

Author Biography

  • Rodolfo A. Coria
    Licienciada en Biología con Orientación en Paleontología, estudiante de la Carrera de Doctorado en Ciencias Biológicas de la Facultad de Ciencias Exactas y Naturales, UBA.

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Published

2014-02-20

Issue

Vol. 38 No. 4

Section

Articles

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How to Cite

Tooth replacement in a sauropod premaxilla from the Upper Cretaceous of Patagonia, Argentina. (2014). Ameghiniana, 38(4), 463-466. https://ameghiniana.org.ar/index.php/ameghiniana/article/view/2637

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