Pg. 9-10, 16-17, 36 (table 6), pl. 27. Quajote member of Lowell formation of Bisbee group. Sandstone, shale, and limestone. Subdivided into (descending) divisions 3a to 3f (32 feet thick) and 4a to 4e (21 feet thick). Total thickness 53 feet. Underlies Perilla member and overlies Cholla member, both of Lowell formation. Fossils. Age is Early Cretaceous (Aptian); ACANTHOHOPLITES ASCHILTAENSIS to IMMUNITOCERAS NOLANI standard ammonite zone.
[Occurs in the Ninety One Hills area, local name for hills in secs. 14 and 23, T. 24 S., R. 24 E., immediately north of International border in vicinity of International Monument No. 91, southeast of Bisbee Junction on Southern Pacific RR, Bisbee 15-min quadrangle, Cochise Co., southeastern AZ. Area includes type locality and standard section of Lowell Formation.]
[Misprint: compilation in US geologic names lexicon (USGS Bull. 1200, p. 3167) covers only upper part of Quajote Member (divisions 3a to 3f). The Quajote includes divisions 3a to 3f (32 feet thick) and 4a to 4e (21 feet thick).]

Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 3167).