Poacites sp.
From the collection of Yale Peabody Museum. Free to download, adapt and use — no permission needed.
Geological context: Paleogene. Collection locality: Medicine Lodge Creek. (Orr) of an unnamed formation (Orr). Geological site 155/155 is the Anton Creek locality about two miles west of the road (Sec. 27, 28; T11S, R12W). highway about 20 to 25 miles west across the Tendoy Mountains. Begins just east of Grant, bisects the sites of the florule and terminates at Dubois, Idaho. These three extensive fossilerous sites collectively represent the geological type section 155 (Orr) of an unnamed formation (Orr). Geological site 155/155 is the Anton Creek locality about two miles west of the road (Sec. 27, 28; T11S, R12W), Beaverhead County, Montana, USA. Collected by Herman F. Becker, 1969. PB number 69650; lot count 1; accn=YPM.07579.
Yale Peabody Museum’s own description