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6262Potobatis semperei - A Ray of the Paleocene

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  • Neal Robbins
    Nov 21, 2013
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          Potobatis semperei was a ray of the Paleocene. The systematic paleontology of it is:
      Chondrichthyes Huxley 1880
      Elasmobranchii Bonaparte 1838
      Batoidea sensu Compagno 1973
      Dasyatoidea Whitley 1940
      Potobatis Cappetta and Gayet 2013
      Potobatis semperei Cappetta and Gayet 2013
          Fossil remains of this ray were found in the El Molino Formation at La Palca, near Potosi in Bolivia. They date to the Danian interval (65.5 - 61.7 million years ago) of the Paleocene.
          Henri Cappetta and Mireille Gayet wrote an article titled A new elasmobranch genus(Myliobatiformes, Dasyatoidea) from the Danian of Potosi (Bolivia). It was published in 2013 in Neues Jahrbuch fur Geologie und Palaontologie-Abhandlungen, Volume 269, Number 3, pp. 285-290. This quote from the abstract says:
      Potobatis semperei gen. et sp. nov. sp. (Myliobatiformes, Dasyatoidea) comes from a level located at the top of the section of the El Molino Formation at La Palca, near Potosí. This level is Danian in age according to magnetostratigraphic studies. Close to the African genus Hypolophites (Dasyatoidea, Dasyatidae) by its dental morphology, the new genus differs from the latter by its much smaller size and by its less specialized dentition. The palaeoenvironment was probably an estuarine or a mangrove area.
          Neal Robbins

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