@misc{indiciaea073e8874f37, title = {Paleoecology of an early oligocene biota from Douglass Creek Basin, Montana}, author = {Richard L. Konizeski}, year = {1961}, doi = {10.1130/0016-7606(1961)72[1633:poaeob]2.0.co;2}, url = {https://pubs.usgs.gov/publication/70220644}, note = {Source identifier: 70220644} }