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Late Pleistocene Mylodont Sloth Paramylodon harlani (Mammalia: Xenarthra) from Arizona

H. Gregory McDonald, Larry D. Agenbroad and Carol Manganaro Haden
The Southwestern Naturalist
Vol. 49, No. 2 (Jun., 2004), pp. 229-238
Stable URL: http://www.jstor.org/stable/3672689
Page Count: 10
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Late Pleistocene Mylodont Sloth Paramylodon harlani (Mammalia: Xenarthra) from Arizona
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Abstract

The late Pleistocene ground sloth Paramylodon harlani was widely distributed across North America, but it is represented in Arizona by only 2 records. These include a nearly complete skeleton from the Richville Gravels near Springerville, Apache County, and a second partial skeleton from Shonto, Navajo County. Both specimens are from reportedly lacustrine deposits and suggest that the species was not adapted to xeric conditions. Thus, its distribution in the Southwest and potential for dispersal might have been determined by the presence of permanent water sources. /// El perezoso terrestre Paramylodon harlani del Pleistoceno tardío tenía una distribución amplia en América del Norte, pero su presencia en Arizona está documentada con sólo dos registros. Estos incluyen un esqueleto casi completo de los Richville Gravels cerca de Springerville, condado de Apache, y un esqueleto parcial de Shonto, condado de Navajo. Ambos especimenes, según se dice son de depósitos lacustres e indican que la especie no estaba adaptada a condiciones secas. Entonces, su distribución en el sudoeste de USA y su potencial para diseminar podía haber sido determinado por la presencia de fuentes permanentes de agua.

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