Enigmatic, biogenically induced structures in Pleistocene marine deposits: A first record of fossil ambergris Baldanza, A. ; Bizzarri, R. ; Famiani, F. ; Monaco, P. ; Pellegrino, R. ; Sassi, P. Abstract Publication: Geology Pub Date: October 2013 DOI: 10.1130/G34731.1 Bibcode: 2013Geo....41.1075B