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Late Pleistocene Fauna from the Southern Colorado Plateau, Navajo County, Arizona

Lyndon K. Murray, Christopher J. Bell, M. Timothy Dolan and Jim I. Mead
The Southwestern Naturalist
Vol. 50, No. 3 (Sep., 2005), pp. 363-374
Stable URL: http://www.jstor.org/stable/3672481
Page Count: 12
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Late Pleistocene Fauna from the Southern Colorado Plateau, Navajo County, Arizona
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Abstract

We discovered a mandible of the flat-headed peccary (Platygonus compressus) in a sand and gravel borrow pit (Pit Stop Quarry) between Taylor and Show Low, Navajo County, Arizona. We also found isolated skeletal elements of a mole salamander (Ambystomatidae), pygmy rabbit (Brachylagus idahoensis), sagebrush vole (Lemmiscus curtatus), and several other small mammals in sediments immediately surrounding the peccary jaw. The presence of P. compressus indicates that the deposit is of late Pleistocene age. Specimens also represent the first Pleistocene record of Ambystomatidae on the Colorado Plateau, an important additional record of P. compressus on the Colorado Plateau, and 1 of 2 records of B. idahoensis in Arizona. /// Descubrimos una mandíbula de la javelina Platygonus compressus en una cantera de arena y grava (Pit Stop Quarry) entre Taylor y Show Low, condado de Navajo en Arizona. Encontramos también elementos esqueléticos aislados de una salamandra (Ambystomatidae), del conejo pigmeo (Brachylagus idahoensis), del campañol (Lemmiscus curtatus), y varios otros mamíferos pequeños en sedimentos alrededor de la mandíbula de la javelina. La presencia de P. compressus indica que el depósito es del Pleistoceno tardío. Los especimenes también representan el primer registro del Pleistoceno de Ambystomatidae en el Colorado Plateau, un importante registro adicional de P. compressus en el Colorado Plateau, y 1 de 2 registros de B. idahoensis en Arizona.

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