|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Rodentia - Sciuridae
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).
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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.
|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.|