{"id":"000028179","type":"book","title":"New evidence of the lower miocene age of the Blacktail Deer Creek formation in Montana. - Ann Arbor, MI","container-title":"Contributions from the Museum of Paleontology ; 8.1950, no. 7, S. 193-204 : 3 Ill. ; 1 Kt","author":[{"family":"Hibbard","given":"Claude W."}],"issued":{"raw":"1950"}}