Mexico, Sonora, Hermosillo, Isla Tiburón. East side of island, at the head of arroyo, facing north, at base of the Sierra Kunkaak. Between Sierra Kunkaak Major and Sierra Kunkaak Segundo.
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