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Leptarctus

Mammalia - Carnivora - Mustelidae

Synonyms
Synonymy list
YearName and author
1856Leptarctus Leidy
1902Leptarctus Hay p. 764
1941Mephititaxus White
1954Hypsoparia Dorr p. 179
1988Leptarctus Carroll
1998Leptarctus Baskin p. 158
2000Hypsoparia Lim and Miao
2001Leptarctus Lim and Martin p. 314
2002Hypsoparia Lim and Martin p. 270
2003Leptarctus (Pseudoleptarctus) Lim and Martin
2004Hypsoparia Wang et al.
2004Leptarctus Wang et al.
2005Leptarctus Baskin
2009Leptarctus Bever and Zakrzewski p. 466
2009Leptarctus Korth and Baskin p. 31
2010Leptarctus Robles et al. p. 550
2017Leptarctus Baskin pp. e1293069-12

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
RankNameAuthor
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
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

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.

G. †Leptarctus Leidy 1856
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Leptarctus ancipidens White 1941
Leptarctus martini Lim and Miao 2000
Leptarctus mummorum Korth and Baskin 2009
Leptarctus oregonensis Stock 1930
Leptarctus primus Leidy 1856
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Invalid names: Hypsoparia bozemanensis Dorr 1954 [synonym], Hypsoparia timmi Lim and Martin 2002 [synonym]
Leptarctus progressus Simpson 1930
Leptarctus supremus Lim et al. 2001
Leptarctus webbi Baskin 2005
Leptarctus woodburnei Bever and Zakrzewski 2009
Leptarctus wortmani Matthew 1924
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Invalid names: Leptarctus (Pseudoleptarctus) genowaysi Lim and Martin 2003 [synonym], Leptarctus desuii Lim and Martin 2001 [synonym], Leptarctus kansasensis Lim and Martin 2001 [synonym]
Invalid names: Hypsoparia Dorr 1954 [synonym], Leptarctus (Pseudoleptarctus) Lim and Martin 2003 [invalid subgroup], Mephititaxus White 1941 [synonym]
Diagnosis
ReferenceDiagnosis
J. A. Dorr 1954 (Hypsoparia)Skull size and general proportions, except for zygomatic arch, about that of Leptarctus primus Leidy (1856). Skull broad across zygomae. Muzzle short, deep, and wide. Two separate, prominent, broad and heavy temporal crests. Dental formula I 3?/3, C 1/l, P 3/3, Ml?/2. P, with well developed posterior accessory cuspule external to midline; quadrangular in outline with well developed hypocone; paracone and metacone separated by a distinct notch. M~ quadrate, longest on labial side of crown; protocone more anteriorly placed and hypoconal crescent stronger than in Craterogale Gazin (1936); differs from Mephititaxus White (1941) in being smaller, less inflated, and longer than wide. Orbit small, subcircular, nearly closed behind. Zygomatic arch extremely large, more so than in Leptarctus Leidy (1956) as revised by l\fatthew (1924); height just posterior to orbit equal to or slightly greater than orbital height, becoming higher posteriorly; greatest height just anterior to glenoid cavity about one and three-quarters times orbital height; ventral edge grooved for reception of masseter muscle. Lower jaw large and heavily built, as in Leptarctus wortmani Matthew (1924); anterior edge of coronoid rising steeply, masseteric fossa deep. M, reduced.