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Abbreviation Legend
- (CE) - Criticially Endangered
- (CI) - Critically Imperiled
- (E) - Endangered
- (I) - Introduced
- (IM) - Imperiled
- (NT) - Near Threatened
- (T) - Threatened
- (V) - Vulnerable
- (**) - Recent Classification Change
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Helmeted Lizards (Corytophanidae) of the United States
The Corytophanidae, casquehead lizards, are moderately sized lizards, with laterally compressed bodies, and typically have well-developed head crests in the shape of a casque helmet. The crest is a sexually dimorphic characteristic in males of Basiliscus. but is present in both sexes of Coryophanes and Laemanctus. In past years there have been evidence of corytophanids in the Eocene of North America.
There is only 1 species found in the United States which was Introduced.
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