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Rakomeryx sinclairi

Mammalia - Artiodactyla - Palaeomerycidae

Taxonomy
Cervavus sinclairi was named by Matthew (1918). Its type specimen is AMNH 17336, 17337, 17338, a mandible (three lower jaws), and it is a 3D body fossil.

It was recombined as Blastomeryx sinclairi by Matthew (1924); it was synonymized subjectively with Cranioceras unicornis by Frick (1937) and Webb (1969); it was recombined as Rakomeryx sinclairi by Skinner et al. (1977), Janis and Manning (1998), Prothero and Liter (2007) and Prothero and Liter (2008).

Synonyms
Synonymy list
YearName and author
1918Cervavus sinclairi Matthew p. 218
1924Blastomeryx sinclairi Matthew
1937Rakomeryx gazini Frick
1937Rakomeryx jorakianus Frick
1937Rakomeryx raki Frick
1937Rakomeryx yermonensis Frick
1977Rakomeryx sinclairi Skinner et al.
1998Rakomeryx sinclairi Janis and Manning
2007Rakomeryx sinclairi Prothero and Liter p. 246
2008Rakomeryx sinclairi 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
Synapsida()
RankNameAuthor
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
Ruminantiamorpha
Ruminantia(Scopoli 1777)
Pecora()
superfamilyCervoidea
familyPalaeomerycidaeLydekker 1883
subfamilyDromomerycinae(Frick 1937)
tribeDromomeryciniFrick 1937
genusRakomeryx
speciessinclairi()

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
W. D. Matthew 1918Size of D. whitfordi and very like it in construction but distinguished by higher crowned and less rugose molars with no trace of paheomeryx fold, metaconid of p4 smaller, less extended anteriorly, heel of ms with its inner cusp wholly or almost wholly behind the posterior wing of the hypoconid crescent.
D. R. Prothero and M. R. Liter 2008Horns with less pronounced basal flange, anteriorly
directed, with bases strongly flattened anteroposteriorly, attenuated at tips; shafts strongly bowed laterally, forming concave half-moon shape when viewed from front. Orbits shifted posteriorly over anterior M3. Premolars more reduced than in Dromomeryx, but p4 may lack closure of anterior fossette. Metastylids on upper molars, and large metacone on
P4. Limb proportions like that of Drepanomeryx (after Janis and Man- ning, 1998, p. 483).