|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Rodentia - Sciuridae
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 near the size of that of P. malheurensis; larger than that of P. tephrus. Cranium moderately inflated, about as in Otospermophilus; rostrum relatively broader than in P. malheurensis and relatively narrower than in P. quatalensis; palate broad; notch in ventral border of zygomatic plate opposite P4. P3 larger than in P. quatalensis; other cheek 'teeth large. The diagnosis given by Matthew (1933 :4) is primarily generic rather than specific.|