-Animals (Kingdom Animalia)

-Chordates (Phylum Chordata)

-Vertebrates (Subphylum Vertebrata)

-Reptiles (Class Reptilia)

-​Snakes and Lizards (Order Squamata)

-Lizards (Suborder​ Sauria)

-Phrynosomatid Lizards (Family Phrynosomatidae)

-Sceloporine Lizards (Subfamily Sceloporinae)

-Spiny Lizards (Genus Sceloporus)

-Long-tailed Spiny Lizard (Sceloporus siniferus)

Sceloporus siniferus, the longtail spiny lizard, is a species of lizard in the family Phrynosomatidae. It is endemic to Mexico. Longtail spiny lizard thrives on a diet consisting chiefly of arthropods, with a preference for insects like ants, beetles, and spiders. Its consumption of plant matter is rare, signifying a primarily carnivorous diet.