Kingdom Animalia (animals) Eumetazoa (metazoans) Bilateria (bilaterally symmetrical animals) Deuterostomia (deuterostomes) Phylum Chordata (chordates) Craniata (craniates) Subphylum Vertebrata (vertebrates) Superclass Gnathostomata (jawed vertebrates) Euteleostomi (bony vertebrates) Class Sarcopterygii (lobe-finned fishes and terrestrial vertebrates) Tetrapoda (tetrapods) Amniota (amniotes) Class Reptilia (turtles, snakes, lizards, and relatives) Order Squamata Family Anguidae Genus Mesaspis Species Mesaspis antauges (Mount Orizaba Alligator Lizard) Species Mesaspis gadovii (Gadow's Alligator Lizard) Species Mesaspis juarezi (Sierra Juarez Alligator Lizard) Species Mesaspis monticola Species Mesaspis moreletii (Morelet's Alligator Lizard) Species Mesaspis viridiflava (Dwarf Alligator Lizard)
