Keywords: OttoiaBurgess.jpg en Ottoia prolifica from the Walcott Quarry of the Burgess Shale Middle Cambrian near Field British Columbia Canada own Wilson44691 2009-08-05 Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www3 wooster edu/geology/MWilson html Burgess Shale Ottoia fossils Priapulida fossils |