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Nexuotapirus marslandensis

Osteichthyes - Perissodactyla - Tapiridae

Discussion

"Note on the Authorship of the Species AMNH 82804 was examined by Nienke Prins and myself during our studies of fossil mammals (see Prins and Schoch 1983). We jointly assume responsibility for the authorship of the new species."

Taxonomy
Miotapirus marslandensis was named by Schoch (1984). Its type specimen is AMNH 82804, a set of teeth (left upper M1-M2), and it is a 3D body fossil. Its type locality is Marsland Quarry, which is in a Hemingfordian fluvial horizon in the Runningwater Formation of Nebraska.

It was recombined as Nexuotapirus marslandensis by Albright (1998).

Synonymy list
YearName and author
1984Miotapirus marslandensis Schoch p. 8 fig. 2
1998Nexuotapirus marslandensis Albright p. 204

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
RankNameAuthor
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Panperissodactyla
superorderPerissodactylamorpha
orderPerissodactyla()
—Tapiromorpha(Haeckel 1873)
—Ceratomorpha(Wood 1937)
superfamilyTapiroideaGill 1872
familyTapiridae()
genusNexuotapirus
speciesmarslandensis()

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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Diagnosis
ReferenceDiagnosis
R. M. Schoch 1984Largest known species of Miotapirus: approximately 20-25% larger in linear dental measurements than the only previously known species, Miotapirus harrisonensis.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: browserf
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-22 20:13:37
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Nowak 1991, Carroll 1988, Lillegraven 1979, Hendy et al. 2009, Ji et al. 2002

Age range: base of the Monroecreekian to the top of the Hemingfordian or 24.70000 to 16.30000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Arikareean29.5 - 18.5USA (South Dakota) Nexuotapirus marslandensis (17529)
Monroecreekian24.7 - 23.1USA (South Dakota) Miotapirus harrisonensis (17556)
Harrisonian23.1 - 18.5USA (Wyoming) Nexuotapirus marslandensis (17794)
Aquitanian23.04 - 20.45USA (North Carolina) Nexuotapirus marslandensis (71651)
Aquitanian23.04 - 20.45USA (Texas) Miotapirus marslandensis (18663)
Early/Lower Hemingfordian18.5 - 16.3USA (Nebraska) Miotapirus marslandensis (type locality: 17963)
Hemingfordian18.5 - 16.3USA (Texas) Tayassuidae indet. (18617)