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Hesperhys

Mammalia - Tayassuidae

Synonyms
  • Pediohyus was named by Loomis (1910).

    It was synonymized subjectively with Desmathyus by Dalquest and Mooser (1980); it was synonymized subjectively with Hesperhys by McKenna and Bell (1997).
  • Pediohyus ferus was named by Loomis (1910) [genotype]. Its type locality is Raw Hide Buttes (Upper Harrison), which is in an Arikareean terrestrial horizon in Wyoming.

    It was recombined as Desmathyus ferus by Dalquest and Mooser (1980); it was recombined as Hesperhys ferus by McKenna and Bell (1997); it was considered a nomen dubium by Prothero (2015) and Prothero (2021).
Synonymy list
YearName and author
1903Hesperhys Douglass
1910Pediohyus Loomis
1910Pediohyus ferus Loomis
1980Desmathyus ferus Dalquest and Mooser
1988Hesperhys Carroll
1997Hesperhys ferus McKenna and Bell
1997Hesperhys McKenna and Bell p. 397
1998Hesperhys Wright p. 395
2015Hesperhys Prothero p. 237
2021Hesperhys Prothero p. 10

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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
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Artiodactylamorpha
Artiodactyla()
superfamilySuoidea
Suina(Gray 1868)
familyTayassuidae
subfamilyHesperhyinae
genusHesperhys

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. †Hesperhys Douglass 1903
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Hesperhys antiquus Marsh 1870
Hesperhys vagrans Douglass 1903
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Invalid names: Desmathyus validus Matthew 1932 [synonym]
Invalid names: Pediohyus Loomis 1910 [synonym]
Diagnosis
ReferenceDiagnosis
D. R. Prothero 2015Very large hesperhyine with very massive, robust skull and aring orbits and zygomatic arches, and broad rostrum; cheek teeth more robust and bulbous than in any other hesperhyine. The plesiochoanal fossa is reduced to a shallow pocket. P3 has a large protocone. The i1 and i2 are deep dorsoventrally at the base.