High Quality Content by WIKIPEDIA articles! Xantusia is one of three genera of night lizards (family Xantusiidae). Species of Xantusia are small to medium-sized, viviparous (live-bearing) lizards found in the U.S. southwest and in northern Mexico. The name and description of the type species and genus was published in 1859, by Spencer Fullerton Baird, the name commemorating the naturalist John Xantus. In biology, a genus is a taxonomic unit used in the classification of living and fossil organisms, which is an example of definition by genus and differentia. The term comes from Latin genus "descent, family, type, gender", cognate with Greek: – genos, "race, stock, kin".

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