The Pleistocene Coyote from the Río Nacaome, Costa Rica

Authors

  • Spencer G. Lucas New Mexico Museum of Natural History and Science, Albuquerque, New Mexico, USA Author
  • Guillermo E. Alvarado Universidad de Costa Rica (UCR), Research Center in Geologial Sciences (CICG by its acronym in Spanish), San José, Costa Rica Author

DOI:

https://doi.org/10.15517/ytzr8902

Keywords:

Pleistocene, Coyote, Costa Rica, Dentary, Canis latrans, C. familiaris

Abstract

In 1997, we identified as coyote (Canis latrans) a dentulous left dentary of a canid from the Upper Pleistocene of the Río Nacaome in northwestern Costa Rica. This identification has been questioned based on misconceptions about features of the dentary that supposedly diagnose C. latrans. We reaffirm the identity of the Río Nacaome canid as C. latrans based on long established features of the lower dentition that are diagnostic of C. latrans. We also refute the idea that certain features of the dentary are diagnostic of coyotes. The Nacaome coyote fossil is the only fossil of a coyote from Central America and establishes their late Pleistocene presence well south of records in southern Mexico.

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Canis latrans https://animalia.bio/index.php/es/plains-coyote

Published

2025-08-22

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