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Telmatherium

Mammalia - Perissodactyla - Brontotheriidae

Synonyms
Synonymy list
YearName and author
1872Telmatherium Marsh
1878Leurocephalus Osborn et al. p. 42
1880Telmatotherium Marsh
1881Leurocephalus Cope p. 395
1895Manteoceras Hatcher
1908Manteoceras Osborn p. 403
1914Telmatherium Osborn p. 405
1926Manteoceras foris Cook
1926Manteoceras pratensis Cook
1926Manteoceras foris Cook p. 18
1988Telmatherium Carroll
1989Telmatherium foris Mader
1989Telmatherium pratensis Mader
1989Telmatherium Prothero and Schoch p. 536
1995Telmatherium foris Mader and Alexander
1995Telmatherium pratensis Mader and Alexander
1998Telmatherium Mader p. 530
2008Telmatherium Mader
2008Telmatherium Mihlbachler p. 413

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
RankNameAuthor
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
orderPerissodactyla()
familyBrontotheriidae()
subfamilyBrontotheriinaeMarsh 1873
genusTelmatherium

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
H. F. Osborn et al. 1878 (Leurocephalus)Upper incisors acute, with strong posterior ndges, lower incisors compressed and laniariform , canines compressed, with serrated cuttm'g edges; first upper premolar with rudimentary . anterior lobe, last upper molar with rudimentary postero- internal cusp. Molars constructed as m Pall2osyops, but higher, with sharper cones and more erect external lobes. Internal median valley very much deeper. Little or no depression at the forehead ; zygomatic arch round, compara- tively straight and does not project outwards, and with ob- scure postorbital process. Premaxillaries short and straight. Mandible with nearly straight lower margin, and shallow masseteric fossa ; mental foramen single.
B. J. Mader 2008Medium to moderately large-sized (length P2 to M3 approximately 160–190 mm) brontotheri-
ine brontothere with a small but distinctive horn-like prominence developed on the frontonasal boundary over facial concavity and a deep pit-like fossa in the middle of the sagittal crest near the back of the skull.