A Late Pleistocene-Holocene Fauna from Chihuahua, Mexico

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Abstract
Analysis of matrix from a small cave near Ciudad Jimenez, Chihuahua, Mexico, has revealed some fossils of probable Late Pleistocene-Holocene age. Extinct taxa include Capromeryx and Coragyps occidentalis. Extralimital finds include Microtus pennsylvanicus, Cryptotis parva, Neotoma lepida, Cynomys sp., and Mustela nigripes. Other possible extralimital forms are Neotoma ? micropus, Neotoma cf. floridana, Neotoma ? cinerea, and ? Oreortyx pictus. A new genus of rabbit is being described by Russell and Harris. Aquatic forms comprise the majority of the avian remains. Shells of the mollusk Humboldtiana cf. torrei were recovered. Lack of provenience data and accurate dates on the remains prevents any certain paleoreconstruction of the environment. However, speculation from the forms recovered indicates that the Late Pleistocene-Holocene of southwest Chihuahua probably was more mesic than today.

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