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Sphenocoelus hyognathus

Mammalia - Perissodactyla - Brontotheriidae

Taxonomy
Palaeosyops hyognathus was named by Osborn (1889) [also attributed to Scott and Osborn 1889 and Osborn 1890, but Osborn 1929 explains that the 1889 publication was a separate issued by himself and that Scott and Osborn's paper did appear in 1890].

It was recombined as Telmatherium hyognathum by Hay (1902); it was recombined as Sphenocoelus hyognathus by Mader (1998) and Mader (2008); it was recombined as Dolichorhinus hyognathus by Hatcher (1895), Osborn (1908), Riggs (1912), Peterson (1924), Osborn (1929), Mader (1989), Mihlbachler (2008) and Dawson and Constenius (2018).

Synonyms
Synonymy list
YearName and author
1889Palaeosyops hyognathus Osborn
1895Dolichorhinus cornutum Hatcher
1895Dolichorhinus hyognathus Hatcher
1895Sphenocoelus cornutum Osborn
1895Telmatotherium cornutum Osborn
1902Dolichorhinus cornutus Hay p. 632
1902Telmatherium hyognathum Hay p. 632
1908Dolichorhinus hyognathus Osborn
1909Dolichorhinus longiceps Douglass
1912Dolichorhinus cornutum Riggs
1912Dolichorhinus hyognathus Riggs
1924Dolichorhinus cornutum Peterson
1924Dolichorhinus hyognathus Peterson
1929Dolichorhinus hyognathus Osborn
1989Dolichorhinus cornutum Mader
1989Dolichorhinus hyognathus Mader
1998Sphenocoelus hyognathus Mader
2008Sphenocoelus hyognathus Mader p. 8
2008Dolichorhinus hyognathus Mihlbachler p. 413
2018Dolichorhinus hyognathus Dawson and Constenius p. 51

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
RankNameAuthor
classMammalia
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
familyBrontotheriidae()
subfamilyBrontotheriinaeMarsh 1873
tribeDolichorhinini()
genusSphenocoelus
specieshyognathus(Osborn 1889)

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.

Sphenocoelus hyognathus Osborn 1889
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Invalid names: Dolichorhinus longiceps Douglass 1909 [synonym], Sphenocoelus cornutum Osborn 1895 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: browserf
Reproduction: viviparoussubc
Created: 2005-08-31 14:53:16
Modified: 2005-08-31 16:53:16
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Lillegraven 1979, Carroll 1988, Mader 1998, Hendy et al. 2009, Ji et al. 2002

Age range: Uintan or 46.20000 to 40.40000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Uintan46.2 - 40.4USA (Utah) Dolichorhinus cornutum (16646)
Uintan46.2 - 40.4USA (Wyoming) Dolichorhinus sp. (16648)