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Leptarctus primus

Mammalia - Carnivora - Mustelidae

Taxonomy
Leptarctus primus was named by Leidy (1856) [also said to be 1857]. It is the type species of Leptarctus.

Synonyms
  • Hypsoparia timmi was named by Lim and Martin (2002). Its type specimen is BHI 1578, a skull (skull and an associated jaw with incomplete dentition), and it is a 3D body fossil. Its type locality is Mission Roadside Site, which is in a Barstovian terrestrial horizon in the Valentine Formation of South Dakota.

    It was synonymized subjectively with Leptarctus primus by Korth and Baskin (2009).
  • Hypsoparia bozemanensis was named by Dorr (1954). Its type specimen is CMNH 9674, a partial skeleton (incomplete skull lacking incisors and an associated jaw with dentition lacking left i3 and right ramus lacking posterior portion of m2), and it is a 3D body fossil. Its type locality is Anceney, which is in a Barstovian channel sandstone in the Madison Valley Formation of Montana. It is the type species of Hypsoparia.

    It was recombined as Leptarctus bozemanensis by Voorhies (1990); it was synonymized subjectively with Leptarctus primus by Webb (1969), Sutton (1977) and Korth and Baskin (2009).
Synonymy list
YearName and author
1856Leptarctus primus Leidy p. 311
1857Leptarctus primus Leidy p. 90
1902Leptarctus primus Hay p. 764
1954Hypsoparia bozemanensis Dorr p. 179 figs. 1 - 5
1990Leptarctus bozemanensis Voorhies
2000Hypsoparia bozemanensis Lim and Miao
2002Hypsoparia bozemanensis Lim and Martin p. 270
2002Hypsoparia timmi Lim and Martin p. 272
2009Leptarctus primus Korth and Baskin p. 41

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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
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Ferae()
—CarnivoramorphaWyss and Flynn 1993
—CarnivoraformesFlynn et al.
orderCarnivora
suborderCaniformiaKretzoi 1943
infraorderCanoidea(Simpson 1931)
superfamilyArctoideaFlower 1869
—Mustelida
familyMustelidaeFischer 1817
subfamilyLeptarctinaeGazin 1936
genusLeptarctus
speciesprimus

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.

†Leptarctus primus Leidy 1856
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Invalid names: Hypsoparia bozemanensis Dorr 1954 [synonym], Hypsoparia timmi Lim and Martin 2002 [synonym]
Diagnosis
ReferenceDiagnosis
J. A. Dorr 1954 (Hypsoparia bozemanensis)So far the only known species of the genus. Generic and specific characters at present inseparable.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: scansorialf
Diet: omnivoreg
Reproduction: viviparoussubc
Created: 2011-06-14 12:10:25
Modified: 2011-06-13 21:10:25
Source: g = genus, f = family, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Korth and Baskin 2009, Ji et al. 2002, Nowak 1991, Hendy et al. 2009, Lillegraven 1979

Age range: Barstovian or 16.30000 to 12.50000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Miocene23.03 - 5.333USA (Montana) Leptarctus bozemanensis (18969)
Barstovian16.3 - 12.5USA (Colorado) Leptarctus primus (18220)
Barstovian16.3 - 12.5USA (South Dakota) Hypsoparia timmi (105967) Leptarctus primus (18397)
Barstovian16.3 - 12.5USA (Nebraska) Leptarctus bozemanensis (18031 18164 18442) Leptarctus primus (18090 18284)
Early/Lower Barstovian16.3 - 12.5USA (Montana) Hypsoparia bozemanensis (18803)