Mexico, Sonora, Hermosillo, Isla Tiburón, east side of island, base of the northern portion of the Sierra Kunkaak, ca. 1/2 km east of Siimen Haax waterhole.
Dups sent to: ARIZ, SD, MEXU. Material was removed for identification purposes and placed in Betancourt's USGS paleobotanical lab reference collection in Tucson, AZ to aid in research of Neotoma-preserved middens from Islands of the Gulf of California. Benjamin Wilder & Julio Betancourt, Sep. 2012