Geography of Morphological Variation

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:
Geography of Morphological Variation

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Grinnell and Swarth complete a set of morphological differences between woodrats of the Neotoma lepida group from coastal California and the interior desert of eastern California. Three years earlier in his revision of the genus Neotoma, E. A. Goldman had considered these two taxa as separate species, even placing them in different species groups. He considered the two so distinct that he made no specific comparison between them, commenting only on their difference in overall size. Seventy years later, Mascarello, in his review of the woodrats along both sides of the lower Colorado River, noted that animals from coastal southern Californian and Baja California differed from those of the Californian and Arizona deserts along multivariate discriminant axes. He also added that he scored in the frequencies of three qualitative craniodental characters among the 12. Mascarello noted substantive difference in the length of the baculum and soft anatomical features of the glans penis “Baja” and his two desert types.

Keywords: Grinnell; Swarth; Goldman; Mascarello; glans

Chapter.  78971 words.  Illustrated.

Subjects: Zoology and Animal Sciences

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