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Taxonomy
Sciurus tephrus was named by Gazin (1932). Its type specimen is CIT 332, a partial skull ( skull without the zygomatic arches, the posterior part of the cranium, and the left cheek teeth; incisors broken off at alveoli.), and it is a 3D body fossil. Its type locality is Skull Spring, which is in a Barstovian terrestrial volcaniclastic in the Butte Creek Formation of Oregon.
It was recombined as Protospermophilus tephrus by Bryant (1945); it was recombined as Citellus tephrus by Black (1963); it was recombined as Otospermophilus tephrus by Barnosky (1986); it was recombined as Spermophilus tephrus by Shotwell (1968), Wilson and Reeder (1993) and Korth (1994).
It was recombined as Protospermophilus tephrus by Bryant (1945); it was recombined as Citellus tephrus by Black (1963); it was recombined as Otospermophilus tephrus by Barnosky (1986); it was recombined as Spermophilus tephrus by Shotwell (1968), Wilson and Reeder (1993) and Korth (1994).
Synonymy list
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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.
†Protospermophilus tephrus Gazin 1932
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. D. Bryant 1945 | Skull small and slender. Rostrum slender, depth greater than width; ridges on premaxillae lateral to incisors low; interorbital region narrow; fossa on anterior surface of zygomatic plate small; notch in ventral border of zygomatic plate opposite posterior margin of P4; fossae anterolateral to incisive foramina shallow. |