1851
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Girard, Charles. On a new American Saurian Reptile. Proceedings of the American Association for the Advancement of Science 4:200-202
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1935
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Smith, Hobart M. Notes on some Mexican lizards of the genus Holbrookia, with a description of a new species. University of Kansas Science Bulletin 22(8):185-201
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1954
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Axtell, Ralph W. The systematic relationships of certain lizards in two species groups of the genus Holbrookia. Thesis. University of Texas, Austin. pp.
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1958
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Axtell, Ralph W. A monographic revision of the Iguanid genus Holbrookia. Dissertation. University of Texas, Austin. pp.
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1958
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Norris, Kenneth Stafford. The evolution and systematics of the iguanid genus Uma and its relation to the evolution of other North American desert reptiles. Bulletin of the American Museum of Natural History 114(3):247-326
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1963
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Clarke, Robert F. The comparative behavior of the iguanid lizards, Callisaurus, Cophosaurus, and Holbrookia. Dissertation. University of Oklahoma, Norman. 136pp.
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1965
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Clarke, Robert F. An ethological study of the iguanid genera Callisaurus, Cophosaurus, and Holbrookia. Emporia State Research Studies 13(4):1-66
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1989
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de Queiroz, Kevin. Morphological and biochemical evolution in the sand lizards. Dissertation. University of California, Berkeley. 491pp.
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1993
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Wiens, John J. Phylogenetic relationships of phrynosomatid lizards and monophyly of the Sceloporus group. Copeia 1993(2):287-299
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2008
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Blaine, Russell A. Biogeography of the North American Southwest sand lizards. Dissertation. Washington University, Saint Louis, Missouri. pp.
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2013
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Lambert, Shea M. and John J. Wiens. Evolution of viviparity: A phylogenetic test of the cold-climate hypothesis in Phrynosomatid lizards. Evolution 67(9):2614–2630
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