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Herpetotherium youngi

Osteichthyes

Taxonomy
Peratherium youngi was named by McGrew (1937). Its type locality is Young Site, which is in a Harrisonian terrestrial sandstone in the Harrison Formation of Nebraska.

It was recombined as Herpetotherium youngi by Crochet (1980), Korth (1992), Korth (1994).

Synonyms
  • Peratherium spindleri was named by Macdonald (1963). Its type specimen is SDSM 54343, a mandible (fragment of right mandible, with m1-4 and the roots of p3-4.), and it is a 3D body fossil. Its type locality is Sharps (SDSM V-5354), which is in a Geringian terrestrial horizon in the Sharps Formation of South Dakota.

    It was recombined as Herpetotherium spindleri by Crochet (1980); it was synonymized subjectively with Herpetotherium youngi by Korth (1992), Korth (1994).
Synonymy list
YearName and author
1937Peratherium youngi McGrew
1963Peratherium spindleri Macdonald p. 164 fig. 3
1980Herpetotherium spindleri Crochet
1980Herpetotherium youngi Crochet
1992Herpetotherium youngi Korth
1994Herpetotherium youngi Korth

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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
RankNameAuthor
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
subclassMetatheria()
—Marsupialiformes
—Marsupialia()
—Herpetotheriidae(Trouessart 1879)
genusHerpetotherium
speciesyoungi(McGrew 1937)

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.

†Herpetotherium youngi McGrew 1937
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Invalid names: Peratherium spindleri Macdonald 1963 [synonym]
Diagnosis
ReferenceDiagnosis
J. R. Macdonald 1963 (Peratherium spindleri)Of medium size; strongly developed anterior and posterior cingula; labial cingulumcontinuous.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: omnivoref
Reproduction: viviparoussubc
Created: 2011-04-28 21:40:09
Modified: 2011-04-28 06:40:09
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Clemens 1979, Hopson 1973, Hendy et al. 2009, Carroll 1988, Sánchez-Villagra et al. 2007, Lillegraven 1979

Age range: base of the Geringian to the top of the Harrisonian or 29.50000 to 18.50000 Ma

Collections (22 total)


Time interval Ma Country or state Original ID and collection number
Geringian29.5 - 24.7USA (South Dakota) Peratherium spindleri (17630 17634 17636)
Geringian29.5 - 24.7USA (Nebraska) Peratherium spindleri (17494 17495 17544 17566 17597)
Arikareean29.5 - 18.5USA (Nebraska) Peratherium spindleri (17567 17568)
Arikareean29.5 - 18.5USA (South Dakota) Peratherium spindleri (17516)
Monroecreekian24.7 - 23.1Canada (Saskatchewan) Peratherium sp. (17526)
Monroecreekian24.7 - 23.1USA (South Dakota) Peratherium sp. (17563) Peratherium youngi (17561 17564)
Harrisonian23.1 - 18.5USA (Nebraska) Herpetotherium youngi (17802 17816 17843 67638 69806 69807) Peratherium youngi (type locality: 17862)