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Sciurus venturus

Mammalia - Rodentia - Sciuridae

Taxonomy
Sciurus venturus was named by Bryant (1945). Its type specimen is UCMP 34550, a mandible (A part of a left mandibular ramus extending from the level of the anterior margin of M1 to the base of the vertical ramus, lower molar teeth well preserved), and it is a 3D body fossil.

It was synonymized subjectively with Protospermophilus quatalensis by James (1963) and Black (1963).

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1945Sciurus venturus Bryant p. 345 figs. Pl. 8, fig. e

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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
subclassTribosphenida()
infraclassEutheria()
Placentalia
EuarchontogliresMurphy et al. 2001
Glires()
orderRodentia
superfamilySciuroidea
familySciuridae
tribeSciurini
genusSciurus
speciesventurus

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
M. D. Bryant 1945Mandibular ramus about the size of that of S. carolinensis. Ramus wide in comparison with depth, stout as in S. fecuyensis; dorsal and ventral masseteric crests prominent; masseteric fossa deep, acutely pointed anteriorrly, terminates below p4. Lower incisor relatively wider than in Recent Sciurus, oval in cross section; lower
molars relatively broader than those of comparable Miocene species and relatively narrower than those of Recent Sciurus; posterolophids slightly concave anteriorly.