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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).
It was synonymized subjectively with Protospermophilus quatalensis by James (1963) and Black (1963).
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1945 | Sciurus venturus Bryant p. 345 figs. Pl. 8, fig. e |
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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.
†Sciurus venturus Bryant 1945
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Diagnosis
Reference | Diagnosis | |
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M. D. Bryant 1945 | Mandibular 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. |