Evolutionary History of the <i>Neotoma lepida</i> Group

James L. Patton, David G. Huckaby and Sergio Ticul Álvarez-Castañeda

in The Evolutionary History and a Systematic Revision of Woodrats of the Neotoma lepida Group

Published by University of California Press

Published in print April 2008 | ISBN: 9780520098664
Published online March 2012 | e-ISBN: 9780520942592 | DOI:
Evolutionary History of the Neotoma lepida Group

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Woodrats of the Neotoma lepida group are recognized from a large number of localities of late and post-Pleistocene age from the midden record of western North America. The estimated divergence dates and their standard errors for each internal node in the clade phylogeny are also provided in this chapter. Estimated divergence times range from an average of 1.6 Ma for the separation between Clade 1 and Clade 2 subclades 2A and 2B. The estimated errors around each node are substantial and consistent with the very limited fossil record. Each node also supports the hypothesis that the base of the Neotama lepida group is within the early Pleistocene. The differentiation between the two subclade clusters within Clade 2 that are separated by the Colorado River is estimated at 500Ka, at a time well before divergences among the three continental subclades of Clade 1. All other diversification events are finally positioned within the Middle Pleistocene or within the Rancholabrean land-mammal age.

Keywords: North America; divergence; phylogeny; Pleistocene; Colorado River

Chapter.  9016 words.  Illustrated.

Subjects: Zoology and Animal Sciences

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