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Volume 82, Issue 1


The taxonomic status of Copemyodon ecuadorensis (Rodentia, Cricetidae), a supposedly extinct muroid from the Ecuadorean Quaternary

Pablo Moreno
  • Mastozoología, Instituto Nacional de Biodiversidad (INABIO) (MECN), Pasaje Rumipamba 341 y Av. de los Shyris, Casilla Postal 170515, Quito, Ecuador
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/ José Luis Román
  • Mastozoología y Paleontología del Instituto de Ciencias Biológicas de la Escuela Politécnica Nacional, Av. Ladrón de Guevara E-11 253 e Isabel la Católica, Casilla Postal 17-01-2759, Quito, Ecuador
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/ Jorge Brito
  • División de Mastozoología, Museo Ecuatoriano de Ciencias Naturales, Instituto Nacional de Biodiversidad, Quito, Ecuador
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/ Ulyses F.J. Pardiñas
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  • Instituto de Diversidad y Evolución Austral (IDEAus-CONICET), Boulevard Brown 2915, Puerto Madryn 9120, Argentina
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Published Online: 2017-03-23 | DOI: https://doi.org/10.1515/mammalia-2016-0179


Copemyodon ecuadorensis was described as a non-sigmodontine extinct cricetid from two rich fossiliferous localities in northern Ecuador. It was hypothesized as being related to both the fossil genus Copemys and the living Peromyscus and, as such, is an example of an independent “copemyine-neotomine” attempt to colonize South America. Here, we re-study the holotype of C. ecuadorensis concluding that it cannot be separated from Reithrodontomys (Cricetidae, Neotominae) at a generic level. Copemyodon constitutes a junior synonym of Reithrodontomys. There are recent populations of Reithrodontomys in Ecuador and most likely it comprises several species. In this context, seems convenient to retain ecuadorensis as a species of Reithrodontomys until an appropriate revision of this genus is performed, although we identify morphological similarities between Reithrodontomys ecuadorensis and the nominal form Reithrodontomys soederstroemi.

This article offers supplementary material which is provided at the end of the article.

Keywords: Copemys; Ecuador; neotominae; Reithrodontomys


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About the article

aPresent address: Mastozoología, Instituto de Ciencias Biológicas de la Escuela Politécnica Nacional, Quito, Ecuador

Received: 2016-12-16

Accepted: 2017-02-16

Published Online: 2017-03-23

Published in Print: 2017-12-20

Citation Information: Mammalia, Volume 82, Issue 1, Pages 89–92, ISSN (Online) 1864-1547, ISSN (Print) 0025-1461, DOI: https://doi.org/10.1515/mammalia-2016-0179.

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