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Trilophodon osborni

Mammalia - Proboscidea - Gomphotheriidae

Taxonomy
Tetrabelodon osborni was named by Barbour (1916). It is a 3D body fossil. Its type locality is Tetrabelodon osborni Quarry, which is in a Barstovian terrestrial horizon in the Valentine Formation of Nebraska.

It was recombined as Trilophodon osborni by Cook (1922), Peterson (1928), Frick (1933) and Osborn (1936); it was synonymized subjectively with Gomphotherium productum by Tobien (1973); it was recombined as Gomphotherium osborni by Downs (1952), Tobien (1972), Voorhies (1990).

Sister species lacking formal opinion data
T. olisiponense

Synonyms
Synonymy list
YearName and author
1914Tetrabelodon willistoni Barbour p. 184
1916Tetrabelodon osborni Barbour
1922Trilophodon osborni Cook
1925Trilophodon abeli Barbour
1928Trilophodon osborni Peterson
1933Trilophodon gregorii Frick
1933Trilophodon osborni Frick p. 596
1936Trilophodon osborni Osborn
1936Trilophodon willistoni Osborn
1952Gomphotherium gregorii Downs
1952Gomphotherium osborni Downs
1952Gomphotherium willistoni Downs
1972Gomphotherium abeli Tobien
1972Gomphotherium osborni Tobien
1990Gomphotherium osborni Voorhies

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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
RankNameAuthor
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—AfrotheriaStanhope et al. 1998
—Tethytheria
orderProboscidea()
familyGomphotheriidaeHay 1922
genusTrilophodonBurmeister 1837
speciesosborni()

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.

†Trilophodon osborni Barbour 1916
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Invalid names: Tetrabelodon willistoni Barbour 1914 [synonym], Trilophodon abeli Barbour 1925 [synonym], Trilophodon gregorii Frick 1933 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingg
Diet: browserg
Reproduction: viviparoussubc
Created: 2005-08-31 15:16:35
Modified: 2005-08-31 17:16:35
Source: g = genus, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Hendy et al. 2009, Lillegraven 1979, Carroll 1988, Lambert and Shoshani 1998

Age range: base of the Barstovian to the top of the Clarendonian or 16.30000 to 9.40000 Ma

Collections (15 total)


Time interval Ma Country or state Original ID and collection number
Miocene23.04 - 5.333USA (Nebraska) Gomphotherium osborni (18350)
Barstovian16.3 - 12.5Canada (Saskatchewan) Gomphotherium osborni (18761)
Barstovian16.3 - 12.5USA (Nebraska) Gomphotherium osborni (18031 18164 18192 18206 18209 18275 18284 18442) Tetrabelodon osborni (type locality: 18416) Tetrabelodon willistoni (18417)
Barstovian - Clarendonian16.3 - 9.4USA (Nebraska) Gomphotherium productum (18077)
Clarendonian12.5 - 9.4USA (Nebraska) Trilophodon osborni (18349) Trilophodon phippsi (18334)