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6246Katepensaurus - A Sauropod Dinosaur of the Cretaceous

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  • Neal Robbins
    Nov 15 11:08 AM
          This link has an illustration of Rebbachisaurus, which is related to Katepensaurus. Both are in the superfamily Diplodocoidea and the family Rebbachisauridae. The image gives an idea of how Katepensaurus looked.
          Katepensaurus goicoechoi was a sauropod dinosaur of the Cretaceous. The systematic paleontology of it is:
      Dinosauria Owen 1842
      Saurischia Seeley 1887
      Sauropodomorpha von Huene 1932
      Sauropoda Marsh 1878
      Diplodocoidea Marsh 1884
      Rebbachisauridae Bonaparte 1997
      Katepensaurus Ibiricu et al. 2013
      Katepensaurus goicoechoi Ibiricu et al. 2013
          Lucio M. Ibiricu, Gabriel A. Casal, Ruben D. Martinez, Matthew C. Lamanna, Marcelo Luna, and Leonardo Salgado wrote an article titled Katepensaurus goicoecheai, gen. et sp. nov., a Late Cretaceous rebbachisaurid (Sauropoda, Diplodocoidea) from central Patagonia, Argentina. It was published in 2013 in the Journal of Vertebrate Paleontology 33(6): 1351-1366. This quote from the abstract says:
         We describe Katepensaurus goicoecheai, gen. et sp. nov., a diplodocoid sauropod dinosaur from the Bajo Barreal Formation (Upper Cretaceous: Cenomanian–Turonian) of south-central Chubut Province, central Patagonia, Argentina. The holotypic specimen is a closely associated partial axial skeleton that includes cervical, dorsal, and caudal vertebrae. The dorsal vertebrae of Katepensaurus exhibit the following distinctive characters that we interpret as autapomorphies: (1) internal lamina divides lateral pneumatic fossa of centrum; (2) vertical ridges or crests present on lateral surface of vertebra, overlying neurocentral junction; (3) pair of laminae in parapophyseal centrodiapophyseal fossa; (4) transverse processes perforated by elliptical fenestrae; and (5) well-defined, rounded fossae on lateral aspect of postzygapophyses. Based on the results of previous phylogenetic analyses, we regard the new taxon as a member of Rebbachisauridae; more specifically, it may pertain to Limaysaurinae, a rebbachisaurid subclade that, to date, is definitively known only from southern South America. As currently understood, the rebbachisaurid fossil record suggests that the clade achieved its greatest taxonomic diversity within a few million years of its extinction during the early Late Cretaceous
          Neal Robbins