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26 May 2025 A New Record of the Extinct Ground Sloth Megalonyx jeffersonii from Kansas and Review of the History of the Genus in the State
H. Gregory McDonald, Laura E. Wilson, Melissa Macias
Author Affiliations +
Abstract

The recovery of a partial skull comprised mostly of the braincase of the extinct sloth, Megalonyx jeffersonii from Hays, Ellis County, Kansas provides a better understanding of the distribution of this species in Kansas and on the Great Plains in general. While the age of the skull could not be determined by radiocarbon dating, its presence in the Peoria loess narrows the age of the specimen to the late Wisconsian, most likely the Last Glacial Maximum between 21,000- and 12,000-years BP. The sloth specimen is among the few vertebrate remains directly recovered from the Peoria loess.

H. Gregory McDonald, Laura E. Wilson, and Melissa Macias "A New Record of the Extinct Ground Sloth Megalonyx jeffersonii from Kansas and Review of the History of the Genus in the State," Transactions of the Kansas Academy of Science 128(1-2), 1-12, (26 May 2025). https://doi.org/10.1660/062.128.0101
Published: 26 May 2025
KEYWORDS
biogeography
Megalonyx
Paleoecology
Peoria loess
Pleistocene
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