Determiner assumed to be Collector; Date approximate
Nancy E. Schroeder
L1957
1970-06-10
United States, Arizona, Coconino, removed in lab, on Tonto Platform in Grand Canyon, East of Kaibab Trail (Shinomo Formation) 3.7 miles NE of Grand Canyon Village
TRS: T31N R3E sec 8
1219 meters
4000ft
On rock; open and semi-sunny, very closely appressed