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Pediomeryx hemphillensis

Osteichthyes - Dromomerycidae

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()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
RankNameAuthor
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Ruminantiamorpha
—Ruminantia(Scopoli 1777)
—Pecora()
superfamilyCervoidea
familyDromomerycidaeFrick 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.

†Pediomeryx hemphillensis Stirton 1936
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Invalid names: Procoileus edensis Frick 1937 [synonym], Yumaceras falkenbachi Frick 1937 [synonym]
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.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialo
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: browserg
Diet 2: grazerg
Reproduction: viviparoussubc
Created: 2009-01-04 10:40:46
Modified: 2009-01-04 12:40:46
Source: g = genus, f = family, o = order, subc = subclass, c = class, subp = subphylum
References: Janis and Manning 1998, Nowak 1999, Hendy et al. 2009, Lillegraven 1979, MacFadden and Cerling 1996, Carroll 1988

Age range: Hemphillian or 9.40000 to 4.70000 Ma

Collections (8 total)


Time interval Ma Country or state Original ID and collection number
Hemphillian9.4 - 4.7USA (Oklahoma) Pediomeryx hemphillensis (18304)
Hemphillian9.4 - 4.7USA (Texas) Pediomeryx hemphillensis (type locality: 18097)
Hemphillian9.4 - 4.7USA (Florida) Pediomeryx sp. (18564)
Hemphillian9.4 - 4.7USA (Kansas) Pediomeryx hemphillensis (18342)
Late/Upper Hemphillian9.4 - 4.7USA (Texas) Pediomeryx hemphillensis (18093)
Late/Upper Hemphillian9.4 - 4.7USA (Nebraska) Pediomeryx hemphillensis (18499)
Late/Upper Hemphillian9.4 - 4.7USA (California) Pediomeryx hemphillensis (19582) Procoileus edensis (19445)