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Yumaceras

Mammalia - Artiodactyla - Palaeomerycidae

Taxonomy
Yumaceras was named by Frick (1937). Its type is Yumaceras figginsi.

It was synonymized subjectively with Pediomeryx by Savage (1941) and Janis and Manning (1998); it was reranked as Pediomeryx (Yumaceras) by Webb (1983); it was synonymized subjectively with Cranioceras by Tedford et al. (1987).

It was assigned to Pediomeryx by Webb (1983); and to Cranioceratini by Prothero and Liter (2007) and Prothero and Liter (2008).

Synonymy list
YearName and author
1937Yumaceras Frick
1983Pediomeryx (Yumaceras) Webb
2007Yumaceras Prothero and Liter p. 248
2008Yumaceras Prothero and Liter

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
Ruminantiamorpha
Ruminantia(Scopoli 1777)
Pecora()
superfamilyCervoidea
familyPalaeomerycidaeLydekker 1883
subfamilyDromomerycinae(Frick 1937)
tribeCranioceratiniFrick 1937
genusYumaceras

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
D. R. Prothero and M. R. Liter 2008Long, nearly vertical supraorbital horns with retrocurved and anteriorly flattened tips, and round midshaft section. Occipital appendage longer than in Cranioceras, and rising more verti- cally, with more anteroposteriorly flattened tip. No upper canine. Di- astema moderate. Mandible with nearly straight ventral border. Premolar row reduced, with p2 greatly reduced; p4 closed lingually by long meta- conid. Mesodont molars without Palaeomeryx fold (modified from Janis and Manning, 1998, p. 486).