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Ornate Tree Lizard vs. Western Earless Lizard

Both are small lizards with tiny grain-like back scales and a fold across the throat, so the scales do not separate them. A: male Tree Lizards have blue or blue-green belly patches and a yellow, orange or green throat; male Earless Lizards have two short black bars on each side behind the front leg. B: the Tree Lizard is slim and long-tailed with dark wavy crossbars, and climbs rock faces and junipers; the Earless Lizard is spotted, with pale stripes, and runs on open sand. The Tree Lizard has an ear opening behind the jaw; the Earless Lizard has none. In Wyoming they live far apart: the Tree Lizard near Flaming Gorge, the Earless Lizard in the southeast.

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Ornate Tree Lizard

Urosaurus ornatus

Western Earless Lizard

Holbrookia maculata
Ornate Tree Lizard vs. Western Earless Lizard: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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