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) Synapsida (synapsids) Class Mammalia (mammals) Subclass Theria (Therian mammals) Infraclass Eutheria (placental mammals) Order Rodentia (rodents) Suborder Hystricomorpha (hystricognath rodents) Infraorder Hystricognathi (hystricognath rodents) Family Echimyidae (spiny rats) Subfamily Eumysopinae (primitive spiny rats) Genus Trinomys Species Trinomys eliasi (Elias' Atlantic spiny-rat)
