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
CladusSynapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Cladus: Theriimorpha
Cladus: Theriiformes
Cladus: Trechnotheria
Cladus: Cladotheria
Cladus: Prototribosphenida
Cladus: Zatheria
Cladus: Tribosphenida
Cladus: Boreosphenida
Subclassis: Theria
Cladus: Eutheria
Infraclassis: Placentalia
Magnordo: Boreoeutheria
Superordo: Laurasiatheria
Cladus: Scrotifera
Grandordo: Ferungulata
Mirordo: Euungulata
Ordo: Perissodactyla
Familia: †Brontotheriidae
Subfamilia: Dolichorhininae
Genus: Mesatirhinus
Mesatirhinus is a genus of brontothere endemic to North America during the Eocene living from 50.3 to 42 mya, existing for approximately 8.3 million years.[1]
Taxonomy
Mesatirhinus was named by Osborn (1908). It is not extant. It was assigned to Brontotheriidae by Osborn (1908) and Carroll (1988); and to Dolichorhininae by Mader (1998).[2]
Morphology
This animal's height is said to be approximately 1 m (3 feet).
References
PaleoBiology Database: Mesatirhinus, basic info
B. J. Mader. 1998. Brontotheriidae. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary Mammals of North America 1:525-536
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