Rioarribasaurus, a new name for a Late Triassic dinosaur from New Mexico (USA)

  • Adrian P. Hunt
  • Spencer G. Lucas


The Late-Triassic-dinosaur generic nameCoelophysis Cope 1889 (type species C.bauri [Cope 1887]) is a nomen dubium because the lectotype of C.bauri, AMNH 2722, is four sacral vertebrae and a pubic process of the ilium that are not diagnostic. Dinosaur specimens from the famous Whitaker (“Coelophysis”) quarry in the Rock Point Member of the Chinle Formation at Ghost Ranch, New Mexico thus lack a valid name. We create a new genus and species name,Rioarribasaurus colberti, for these specimens.


Cove International Code Sacral Vertebra Zoological Nomenclature Theropod Dinosaur 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Die generische Bezeichnung für den obertriassischen DinosaurierCoelophysis Cope 1989 (TypusartC. bauri [Cope 1887]) ist ein nomen dubium, da der Lectotypus der C.bauri, AMNH 2722, aus vier Sakralwirbeln und einem Pubis-Fortsatz des Iliums besteht, die nicht hinreichend spezifisch sind. Daher fehlt eine korrekte Bezeichnung für die Dinosaurier-Spezies aus dem berühmten Whitaker (»Coelophysis«-Steinbruch im Rock Point Member der Chinle Formation in Ghost Ranch, New Mexico. Wir schlagen folgende neue Bezeichnung für Genus und Spezies vor:Rioarribasaurus colberti.


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Copyright information

© E. Schweizerbart’sche Verlagsbuchhandlung 1991

Authors and Affiliations

  • Adrian P. Hunt
    • 1
  • Spencer G. Lucas
    • 1
  1. 1.New Mexico Museum of Natural HistoryAlbuquerqueUSA

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