Superregnum: Eukaryota Cladus: Unikonta Cladus: Opisthokonta Cladus: Holozoa Regnum: Animalia Subregnum: Eumetazoa Cladus: Bilateria Cladus: Nephrozoa Superphylum: Deuterostomia Phylum: Chordata Subphylum: Vertebrata Infraphylum: Gnathostomata Megaclassis: Osteichthyes Cladus: Sarcopterygii Cladus: Rhipidistia Cladus: Tetrapodomorpha Cladus: Eotetrapodiformes Cladus: Elpistostegalia Superclassis: Tetrapoda Cladus: Reptiliomorpha Cladus: Amniota Cladus: Synapsida Cladus: Eupelycosauria Cladus: Sphenacodontia Cladus: Sphenacodontoidea Cladus: Therapsida Cladus: Theriodontia Cladus: Cynodontia Cladus: Eucynodontia Cladus: Probainognathia Cladus: Prozostrodontia Cladus: Mammaliaformes Classis: Mammalia Subclassis: Trechnotheria Infraclassis: Zatheria Supercohors: Theria Cohors: Eutheria Infraclassis: Placentalia Cladus: Boreoeutheria Superordo: Laurasiatheria Cladus: Scrotifera Cladus: Ferungulata Cladus: Euungulata Ordo: Artiodactyla
Familia: †Protoceratidae Genus: Leptoreodon