Chapter

Time and a Continent

Wade C. Sherbrooke

in Introduction to Horned Lizards of North America

Published by University of California Press

Published in print August 2003 | ISBN: 9780520228252
Published online March 2012 | e-ISBN: 9780520926752 | DOI: http://dx.doi.org/10.1525/california/9780520228252.003.0002
Time and a Continent

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Horned lizards belong to the Iguanidae, which consists of 50 genera with more than 500 species. The iguanids are divided into eight different families, with horned lizards belonging to the Phrynosomatidae family. Thirteen species of horned lizards can be found in North America. This chapter discusses the origins and evolution of horned lizards, including the factors that contributed to their survival and adaptability to diverse climatic and ecological conditions throughout western United States and Mexico. Scientists believed that the ancestors of horned lizards lived in the sea, evolved into land vertebrates, and were molded by Cenozoic geologic and climatic events.

Keywords: horned lizards; Iguanidae; Phrynosomatidae; North America; origins; evolution; survival; adaptability

Chapter.  1490 words. 

Subjects: Zoology and Animal Sciences

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