TY - RPRT TI - Taphonomy and paleoecology of nonmarine Mollusca; indicators of alluvial plain lacustrine sedimentation, upper part of the Tongue River Member, Fort Union Formation (Paleocene), northern Powder River basin, Wyoming and Montana AU - John H. Hanley AU - Romeo M. Flores PY - 1987 DO - 10.2307/3514619 UR - https://pubs.usgs.gov/publication/70014247 ID - 70014247 ER -