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He suspected that the lizard might be venomous due to the grooves in the teeth. [8] The first drawing of a Gila monster by Baird, S. F. (1857) [8] The Gila monster is the largest extant lizard species native to North America north of the Mexican border. Its snout-to-vent length ranges from 26 to 36 cm (10 to 14 in). The tail is about 20% of the ...
Pygmy short-horned lizard Phrynosoma mcallii: Flat-tail horned lizard Phrynosoma platyrhinos: Desert horned lizard Sceloporus graciosus: Common sagebrush lizard Sceloporus magister: Desert spiny lizard Sceloporus occidentalis: Western fence lizard Sceloporus orcutti: Granite spiny lizard Sceloporus uniformis: Yellow-backed spiny lizard Uma inornata
The beaded lizards have one close living relative, the Gila monster (H. suspectum), as well as many extinct relatives in the Helodermatidae, whose genetic history may be traced back to the Cretaceous period. The genus Heloderma has existed since the Miocene Epoch, when H. texana ranged over most of North America. [5]
The southern alligator lizard (Elgaria multicarinata) is a common species of lizard in the family Anguidae.The species is native to the Pacific coast of North America. [1] [2] It ranges from Baja California to the state of Washington and lives in a variety of habitats including grasslands, chaparral, forests, and even urban areas.
[1] [2] They are often distinguished from poisonous animals, which instead passively deliver their toxins (called poison) to their victims upon contact such as through inhalation, absorption through the skin, or after being ingested. [1] [2] [3] The only difference between venomous animals and poisonous animals is how they deliver the toxins. [3]
The western fence lizard (Sceloporus occidentalis) is a species of lizard native to Arizona, New Mexico, and California, as well as Idaho, Nevada, Oregon, Utah, Washington, and Northern Mexico. The species is widely found in its native range and is considered common, often being seen in yards, or as the name implies, on fences.
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Cope ED. 1892. A critical review of the characters and variations of the snakes of North America. Proceedings of the U.S. National Museum 14(882): 589-694. Garman S. 1884. The reptiles and batrachians of North America. Memoires of the Museum of Comparative Zoology 8(3): 1-185. Murphy RW, Kovac V, Haddrath O, Oliver GS, Fishbein A. 1995.