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Leptarctus ancipidens

Mammalia - Carnivora - Mustelidae

Taxonomy
Mephititaxus ancipidens was named by White (1941) [genotype; type locality is Thomas Farm]. Its type specimen is MCZ. 3658, a maxilla (right and left [upper] P2-M1), and it is a 3D body fossil.

It was recombined as Leptarctus ancipidens by Olsen (1957), Wagner and Reynolds (1983), Lim and Miao (2000), Korth and Baskin (2009) and Baskin (2017).

Synonymy list
YearName and author
1941Mephititaxus ancipidens White p. 92 figs. pl. XIV, fig. 1
1957Leptarctus ancipidens Olsen
1983Leptarctus ancipidens Wagner and Reynolds
2000Leptarctus ancipidens Lim and Miao
2009Leptarctus ancipidens Korth and Baskin p. 41
2017Leptarctus ancipidens 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
speciesancipidens()

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 ancipidens White 1941
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Diagnosis
ReferenceDiagnosis
T. E. White 1941P2+3 double-rooted with simple, more or less conical crowns; P4 with subequal, conical protocone and hypocone; protocone slightly in advance of paracone; hypocone opposite posterior half of paracone; parastyle distinct; Ml slightly wider than long; a well developed antero-internal cingulum; a small metaconule probably present; anterior width of tooth greater than posterior; otherwise tooth as in Mephitis.