|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 quatalensis by Bryant (1945), James (1963) and Black (1963).
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 massive; width of rostrum greater than depth; ridges on pre- maxillae lateral to incisors prominent; palate wide in proportion to length of tooth row but actually narrower than in P. malheurensis and P. angusticeps; fossae anterolateral to incisive foramina deep; massereric tubercles moderately prominent. Lower jaw shallow and stout; dorsal surface between incisor and p4 slightly depressed; masseteric crests prominent; masseteric fossa terminates anteriorly below posterior margin of p4. Mandibular tooth row long in proportion to depth of jaw; p3 a minute cone; p4, m1 and m2 nearly quadrate in occlusal outline, low crowned, cingula separated from protocone by furrows; mesostyles and mesostylids present on molars.|