''Meizonyx'' is an extinct genus of
megalonychid
Megalonychidae is an extinct family of sloths including the extinct ''Megalonyx''. Megalonychids first appeared in the early Oligocene, about 35 million years (Ma) ago, in southern Argentina (Patagonia). There is actually one possible find dating ...
ground sloth from the Pleistocene of
El Salvador and southern
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...
. The type and only species, ''Meizonyx salvadorensis,'' was described in 1985 from a mandible found in Barranca del Sisimico and other remains found at Rio Tomayate in El Salvador considered to be
Middle Pleistocene
The Chibanian, widely known by its previous designation of Middle Pleistocene, is an age in the international geologic timescale or a stage in chronostratigraphy, being a division of the Pleistocene Epoch within the ongoing Quaternary Period. Th ...
in age. Later, in 2021, additional remains were described from Late Pleistocene aged deposits in
Sistema Huautla
Sistema Huautla is a cave system in the Sierra Mazateca mountains of the southern Mexican state of Oaxaca. it was the deepest cave system in the Western Hemisphere, from top to bottom, with over 55 miles of mapped passageways.
Location
Siste ...
, Oxaca, Mexico. It is considered closely related to ''
Xibalbaonyx.''
References
{{Taxonbar, from=Q58418070
Prehistoric sloths
Pleistocene xenarthrans
Prehistoric placental genera
Holocene extinctions
Rancholabrean
Pleistocene Mexico
Fossils of Mexico
Fossil taxa described in 1985