Paleobiology of the Neoproterozoic Svanbergfjellet Formation, Spitsbergen Butterfield, Nicholas J. ; Knoll, Andrew H. ; Swett, Keene Abstract Publication: Lethaia Pub Date: March 1994 DOI: 10.1111/j.1502-3931.1994.tb01558.x Bibcode: 1994Letha..27....1B