Classification
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Phrynosoma - Horned Lizards
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Phrynosoma orbiculare - Mountain Horned Lizard
- P. o. boucardii - Boucard's Horned Lizard
- P. o. bradti - Sierra Madre Horned Lizard
- P. o. cortezii - Cortez's Horned Lizard
- P. o. dugesii - Dugès's Horned Lizard
- P. o. orbiculare - Mountain Horned Lizard
- P. o. orientale - Eastern Mountain Horned Lizard
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Phrynosoma orbiculare - Mountain Horned Lizard