Fossil Butte National Monument is a unit of the National Park Service located in Kemmerer, Wyoming; the national monument was founded on October 23, 1972. The site preserves one of the richest fossil deposits in the world, a 50-million-year-old lake bed. The National Park Service (NPS) is the United States Federal Government agency that deals with all National Parks, many National Monuments, and other conservation properties with various designations. ... A power plant just west of Kemmerer on U.S. Highway 30 Kemmerer is a city located in Lincoln County, Wyoming. ... English national monument Irish national monument U.S. National Monument This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... October 23 is the 296th day of the year (297th in leap years) in the Gregorian Calendar, with 69 days remaining. ... 1972 was a leap year that started on a Saturday. ... A fossil Ammonite Fossils are the mineralized remains of animals or plants or other traces such as footprints. ...