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Teiidae
Teiidae is a family of lizards native to the Americas. Members of this family are generally known as whiptails, though the tegus also belong to this family. The group includes the parthenogenic genera ''Cnemidophorus'' and ''Aspidoscelis'', and the non-parthenogenic ''Tupinambis''. It has over 230 member species in ten genera.〔(eol.org )〕 About 75% of the species are in two dominant genera, ''Aspidoscelis'' and ''Cnemidophorus''. == Morphology ==
Teiids can be distinguished from other lizards by the following characteristics: they have large rectangular scales that form distinct transverse rows ventrally and generally small granular scales dorsally, they have head scales that are separate from the skull bones, and the teiid teeth are solid at the base and "glued" to the jaw bones. Additionally, all teiids have a forked, snake-like tongue. They all possess well-developed limbs. Teiids are all terrestrial and diurnal, and are primarily carnivorous or insectivorous, although some will include a small amount of plant matter in their diet. They all lay eggs, with some species laying very large clutches.〔
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