Notiosorex is a genus of shrew from the subfamily Soricinae. History Notiosorex shrews have a fossil history that extends to the Miocene (i.e., mid-Hemphillian). The geographic distribution of the genus has always been in the southwestern United States and northern Mexico. Species There are four described extant species of Notiosorex: Cockrum's gray shrew (N. cockrumi) Crawford's gray shrew (N. crawfordi) Large-eared gray shrew (N. evotis) Villa's gray shrew (N. villai) (N. tataticuli) There are several extinct species of Notiosorex described from the fossil record: N. repenningi N. jacksoni N. harrisi N. dalquesti References Mammal genera