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Stegomastodon mirificus

Mammalia - Proboscidea - Gomphotheriidae

Taxonomy
Mastodon (Tetralophodon) mirificus was named by Leidy (1858). It is a 3D body fossil. Its type locality is Niobrara River (coll. Hayden 1857), which is in a Barstovian/Clarendonian terrestrial horizon in the Loup Fork Formation of Nebraska.

It was recombined as Rhabdobunus mirificus by Hay (1914); it was recombined as Tetralophodon mirificus by Osborn (1918); it was recombined as Stegomastodon mirificus by Pohlig (1912), Matthew (1918), Osborn (1924), Hibbard (1951), Kurten and Anderson (1980), Repenning et al. (1995), Shoshani and Tassy (1996) and Zurita et al. (2004).

Synonyms
Synonymy list
YearName and author
1858Mastodon (Tetralophodon) mirificus Leidy p. 28
1892Mastodon successor Cope
1912Stegomastodon mirificus Pohlig
1914Rhabdobunus mirificus Hay
1918Stegomastodon mirificus Matthew
1918Tetralophodon mirificus Osborn
1924Stegomastodon mirificus Osborn p. 3
1924Stegomastodon texanus Osborn p. 3
1926Stegomastodon arizonae Gidley
1936Stegomastodon successor Osborn
1949Stegomastodon successor Hibbard and Riggs
1951Stegomastodon mirificus Hibbard
1961Stegomastodon rexroadensis Woodburne
1980Stegomastodon mirificus Kurten and Anderson p. 346
1995Stegomastodon mirificus Repenning et al.
1996Stegomastodon mirificus Shoshani and Tassy
2004Stegomastodon mirificus Zurita et al.

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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()
RankNameAuthor
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
AfrotheriaStanhope et al. 1998
Tethytheria
orderProboscidea()
familyGomphotheriidaeHay 1922
genusStegomastodonPohlig 1912
speciesmirificus()

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.

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Invalid names: Mastodon successor Cope 1892 [synonym], Stegomastodon arizonae Gidley 1926 [synonym], Stegomastodon rexroadensis Woodburne 1961 [synonym], Stegomastodon texanus Osborn 1924 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingg
Diet: grazerg
Reproduction: viviparoussubc
Created: 2005-08-31 15:17:17
Modified: 2005-08-31 17:17:17
Source: g = genus, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Lambert and Shoshani 1998, Lillegraven 1979, Ji et al. 2002, Hendy et al. 2009

Age range: base of the Barstovian to the top of the Irvingtonian or 15.97000 to 0.30000 Ma

Collections (17 total)


Time interval Ma Country or state Original ID and collection number
Barstovian - Clarendonian15.97 - 10.3USA (Nebraska) Mastodon mirificus (190543)
Blancan4.9 - 1.8USA (Arizona) Stegomastodon mirificus (19654)
Blancan4.9 - 1.8USA (Idaho) Stegomastodon mirificus (19768 19911 19913)
Blancan4.9 - 1.8USA (Texas) Stegomastodon mirificus (20030 20033) Stegomastodon sp. (20025)
Blancan4.9 - 1.8USA (New Mexico) Stegomastodon mirificus (19655 19976 19984)
Blancan4.9 - 1.8USA (Kansas) Stegomastodon mirificus (19939) Stegomastodon sp. (19929)
Blancan4.9 - 1.8USA (California) Stegomastodon arizonae (19668)
Blancan - Irvingtonian4.9 - 0.3USA (South Dakota) Stegomastodon mirificus (20020)
Late/Upper Pliocene3.6 - 2.588USA (Texas) Mastodon successor (191451)
Irvingtonian1.8 - 0.3USA (New Mexico) Stegomastodon sp. (20396)