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Snakes and Lizards: Squamata

Conservation Status

The World Conservation Union (IUCN) lists 265 species as being at risk or as already extinct, which means they are no longer in existence. Of these, 14 are Extinct, 36 are Critically Endangered, and 31 are Endangered. Critically Endangered means the species faces an extremely high risk of extinction in the wild. Endangered means the species faces a very high risk of extinction in the wild. Many of these species have been hurt by habitat loss or by the introduction of new species, especially predators, to their habitat.



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Mattison, Chris. Lizards of the World. New York: Facts on File, 1989.

Mattison, Chris. The Encyclopedia of Snakes. New York: DK Publishing, 1997.

McCarthy, Colin. Eyewitness: Reptile. New York: DK Publishing, 2000.

Montgomery, Sy. The Snake Scientist (Scientists in the Field). Boston: Houghton Mifflin, 2001.

O'Shea, Mark, and Tim Halliday. Smithsonian Handbooks: Reptiles and Amphibians (Smithsonian Handbooks). New York: DK Publishing, 2002.

Pianka, E. R. Ecology and Natural History of Desert Lizards: Analyses of the Ecological Niche and Community Structure. Princeton, NJ: Princeton University Press, 1986.

Pianka, E. R., and L. J. Vitt. Lizards: Windows to the Evolution of Diversity. Berkeley: University of California Press, 2003.

Zug, George R., Laurie J. Vitt, and Janalee P. Caldwell. Herpetology: An Introductory Biology of Amphibians and Reptiles. 2nd edition. San Diego: Academic Press, 2001.

Web sites:

"About Snakes." Ohio Public Library Information Network. http://www.oplin.lib.oh.us/snake/about/snakes.html (accessed on December 13, 2004).

"Herpetology Program." Savannah River Ecology Laboratory. http://www.uga.edu/srelherp/ (accessed on December 13, 2004).

Myers, P. 2001. "Reptilia." Animal Diversity Web. http://animaldiversity.ummz.umich.edu/site/accounts/information/Reptilia.html (accessed on December 13, 2004).

"Reptiles." San Diego Natural History Museum. http://www.sdnhm.org/exhibits/reptiles/reptiles.html (accessed on December 13, 2004).

Additional topics

Animal Life ResourceDinosaurs, Snakes, and Other ReptilesSnakes and Lizards: Squamata - Physical Characteristics, Habitat, Diet, Behavior And Reproduction, Conservation Status - GEOGRAPHIC RANGE, SQUAMATES AND PEOPLE