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Pediomeryx hemphillensis

Mammalia - Artiodactyla - Palaeomerycidae

Taxonomy
Pediomeryx hemphillensis was named by Stirton (1936) [genotype]. Its type specimen is UCMP 30703, a mandible (right mandible with p2-m3 moderately worn, ascending ramus and anterior part of jaw missing), and it is a 3D body fossil. Its type locality is Coffee Ranch, which is in a Hemphillian terrestrial horizon in Texas. It is the type species of Pediomeryx.

Synonyms
Synonymy list
YearName and author
1936Pediomeryx hemphillensis Stirton p. 644 fig. 1
1937Procoileus edensis Frick
1937Yumaceras falkenbachi Frick
1937Procoileus edensis Frick p. 191
2007Pediomeryx hemphillensis Prothero and Liter p. 248
2008Pediomeryx hemphillensis Prothero and Liter

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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
Synapsida()
RankNameAuthor
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
Ruminantiamorpha
Ruminantia(Scopoli 1777)
Pecora()
superfamilyCervoidea
familyPalaeomerycidaeLydekker 1883
subfamilyDromomerycinae(Frick 1937)
tribeCranioceratiniFrick 1937
genusPediomeryx
specieshemphillensis

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
R. A. Stirton 1936Horizontal ramus nearly straight; antero-outer basal ridge on p4; talonid of m3 with single outer crescentic cusp, no loop present forming fossettid; no "palaeomeryx folds"; entoconids and hypoconids of p3-4 not isolated; anterior fossettids on lower molars not open lingually; fossettes on upper molars and fossettids on lower molars become isollated in early stages of wear; no heavy cingula on upper molars; P1 two-rooted; dental formula I?/? C?/? P1234/234 M123/123; brachyselenodont dentition.