Xibalbaonyx oviceps, a new megalonychid ground sloth (Folivora, Xenarthra) from the Late Pleistocene of the Yucatán Peninsula, Mexico, and its paleobiogeographic significance

@article{Stinnesbeck2017XibalbaonyxOA,
  title={Xibalbaonyx oviceps, a new megalonychid ground sloth (Folivora, Xenarthra) from the Late Pleistocene of the Yucat{\'a}n Peninsula, Mexico, and its paleobiogeographic significance},
  author={Sarah R. Stinnesbeck and Eberhard Frey and Jer{\'o}nimo Av{\'i}les Olgu{\'i}n and Wolfgang Stinnesbeck and Patrick Zell and Heinrich Mallison and Arturo Gonz{\'a}lez Gonz{\'a}lez and Eugenio Aceves N{\'u}{\~n}ez and Adriana Vel{\'a}zquez Morlet and Alejandro Terrazas Mata and Martha Benavente Sanvicente and F{\'a}bio Adriano Hering and Carmen Rojas Sandoval},
  journal={PalZ},
  year={2017},
  volume={91},
  pages={245-271}
}
Here we describe a new genus and species of giant ground sloth, Xibalbaonyx oviceps (Megalonychidae, Xenarthra), from the drowned cave system of the northeastern Yucatán Peninsula. The specimen is Late Pleistocene in age and was discovered in the Zapote sinkhole (cenote) near Puerto Morelos in the Mexican state of Quintana Roo. Xibalbaonyx oviceps differs significantly from all hitherto known Megalonychidae including those from the Greater Antilles and South America. The new taxon suggests a… 

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