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| Douglas' horned lizard (Phrynosoma douglassi); pigmy horned lizard (Phrynosoma douglassi); short-horned lizard (Phrynosoma douglassi) | |||
| mountain short-horned lizard (Phrynosoma douglassii douglassii); pygmy short-horned lizard (Phrynosoma douglassii douglassii) | |||