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Ustatochoerus leptoscelos

Mammalia - Artiodactyla - Merycoidodontidae

Taxonomy
Hypsiops leptoscelos was named by Stevens et al. (1969). Its type specimen is TMM 40635-8, a partial skeleton (associated skull, mandibles, left pes, left innominate bone, and greater part of left tibia), and it is a 3D body fossil. Its type locality is Castolon (TMM 40635), which is in a Harrisonian terrestrial horizon in the Delaho Formation of Texas.

It was recombined as Phenacocoelus leptoscelos by Woodburne et al. (1974), Stevens (1977) and MacFadden (1980); it was recombined as Merychyus leptoscelos by Kelly and Lander (1988); it was synonymized subjectively with Merycoides harrisonensis by Lander (1998); it was recombined as Ustatochoerus leptoscelos by Stevens and Stevens (1989), Woodburne (1998) and Stevens and Stevens (2007).

Synonymy list
YearName and author
1969Hypsiops leptoscelos Stevens et al. p. 26 figs. Fig. 9, A-C, F-I; Table 3
1974Phenacocoelus leptoscelos Woodburne et al. p. 19 figs. Text-fig. 6, A to D ; Table 2
1977Phenacocoelus leptoscelos Stevens
1980Phenacocoelus leptoscelos MacFadden p. 96
1988Merychyus leptoscelos Kelly and Lander
1989Ustatochoerus leptoscelos Stevens and Stevens
1998Ustatochoerus leptoscelos Woodburne
2007Ustatochoerus leptoscelos Stevens and Stevens p. 166

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
suborderTylopoda()
superfamilyOreodontoidea
familyMerycoidodontidaeThorpe 1923
subfamilyUstatochoerinae
genusUstatochoerus
speciesleptoscelos()

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.

Diagnosis
ReferenceDiagnosis
M. S. Stevens et al. 1969A small Hypsiops with higher crowned teeth and much more
slender limbs than H. luskensis.