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:

Dantas, Mário A. T., Campbell, Sean Cody and McDonald, H. Gregory. (2023). Paleoecological inferences about the Late Quaternary giant ground sloths from the Americas. Research Square preprint.

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.

McDonald, H. Gregory. (2023). A Tale of Two Continents (and a Few Islands): Ecology and Distribution of Late Pleistocene Sloths. Land 12(6): 1192.

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.


<< Back to the Pilosa (Anteaters and Sloths) database