Origin and Paleoecology of Free-Rolling Oyster Accumulations (Ostreoliths) in the Middle Jurassic of Southwestern Utah, USA Wilson, Mark A. ; Ozanne, Colin R. ; Palmer, Timothy J. Abstract Publication: Palaios Pub Date: February 1998 DOI: 10.2307/3515282 Bibcode: 1998Palai..13...70W