Order Soricomorpha Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 220 311 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Notiosorex cockrumi Baker, O'Neill, and McAliley 2003 Notiosorex cockrumi Baker, O'Neill, and McAliley 2003 , Occas. Pap. Mus . Texas Tech Univ., 222: 2 . Type Locality: USA , Arizona , Cochise Co., Leslie Canyon National Wildlife Refuge, T 21S, R 28E Section NW 1/4 20, 4460 ft. ( 1359 m ). Vernacular Names: Cockrum's Gray Shrew . Distribution: Arizona ( USA ) to C Sonora ( Mexico ). Discussion: A cryptic species indentified on the basis of cytochrome b gene fragments. Carraway and Timm (2000) included this new taxon in crawfordi and stated that they "found no identifyable morphological differences." Sympatric with crawfordi in SE Arizona . A karyotype of 2n = 62, FN = 94 reported earlier from Pima County, Arizona ( Baker and Hsu, 1970 ), may refer to this species, while 2n= 68 and FN = 102 may refer to crawfordi . Molecular data also indicate that a third species occurs in Baja California ( Baker et al., 2003 a ).