Xibalbaonyx oviceps Stinnesbeck et al. 2017



Taxonomy & Nomenclature



Conservation Status


Last record: 10,647 BCE to 10,305 BCE



Yucatán Peninsula, Mexico


Biology & Ecology










Original scientific description:

Stinnesbeck, Sarah R. et al. (2017). Xibalbaonyx oviceps, a new megalonychid ground sloth (Folivora, Xenarthra) from the Late Pleistocene of the Yucatán Peninsula, Mexico, and its paleobiogeographic significance. Paläontologische Zeitschrift 91(2): 245-271. [Abstract]


Other references:

McDonald, H. Gregory. (2021). Yukon to the Yucatan: Habitat partitioning in North American Late Pleistocene ground sloths (Xenarthra, Pilosa). Journal of Palaeosciences 70: 237-251.

Stinnesbeck, Sarah R. et al. (2018). New insights on the paleogeographic distribution of the Late Pleistocene ground sloth genus Xibalbaonyx along the Mesoamerican Corridor. Journal of South American Earth Sciences 85: 108-120. [Abstract]

Stinnesbeck, Sarah R. et al. (2021). Life and death of the ground sloth Xibalbaonyx oviceps from the Yucatán Peninsula, Mexico. Historical Biology 33(11): 2610-2626.


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