Orientation of agnostid shields in Alum Shale (Upper Cambrian): Implications for the depositional environment

References

• Ahlberg , P. and Ahlgren , J. 1996 . Agnostids from the Upper Cambrian of Västergötland, Sweden . GFF , 118 : 129 – 140 .
   Web of Science ®Google Scholar
• Andersson , A. , Dahlman , B. , Gee , D.G. and Snäll , S. 1985 . The Scandinavian alum shales . Sveriges Geologiska Undersökning Ca , 56 : 1 – 50 .
   Google Scholar
• Batschelet , E. 1981 . Circular Statistics in Biology , 371 Academic Press .
   Google Scholar
• Bergman , C.F. 1980 . Macrofossils of the Wenlockian Slite Siltstone of Gotland . Geologiska Föreningens i Stockholm Förhandlingar , 102 : 13 – 25 .
   Google Scholar
• Bergman , C.F. 1983 . Palaeocurrents in the Silurian Slite Marl of Fårö, Sweden . Geologiska Föreningens i Stockholm Förhandlingar , 105 : 169 – 179 .
   Web of Science ®Google Scholar
• Bergström , J. 1973 . Organization, life and systematics of trilobites . Fossils and Strata , 2 : 1 – 69 .
   Google Scholar
• Bergström , J. and Gee , D.G. 1985 . “ The Cambrian in Scandinavia ” . In The Caledonide Orogen—Scandinavia and Related Areas , Edited by: Gee , D.G. and Sturt , B.A. 247 – 271 . John Wiley, & Sons .
   Google Scholar
• Buchardt , B. , Nielsen , A.T. and Schovsbo , N.H. 1997 . Alunskiferen i Skandinavien . Geologisk Tidskrift , 3 : 1 – 30 .
   Google Scholar
• Clarkson , E.N.K. 1973 . Morphology and evolution of the eye in Upper Cambrian Olenidae (Trilobita) . Palaeontology , 16 : 735 – 736 .
   Google Scholar
• Clarkson , E.N.K. and Taylor , C.M. 1995 . The lost world of the olenid trilobites . Geology Today , 11 : 147 – 154 .
   Google Scholar
• Clarkson , E.N.K. , Ahlberg , P. and Taylor , C.M. 1998 . Faunal dynamics and micro-evolu-tionary investigations in the Upper Cambrian Olenus Zone at Andarum, Skåne, Sweden . GFF , 120 : 257 – 267 .
   Web of Science ®Google Scholar
• Futterer , E. 1982 . “ Experiments on the distinction of wave and current influenced shell accumulations ” . In Cyclic and event stratification , Edited by: Einsele , G. and Seilacher , A. 175 – 179 . Springer-Verlag .
   Google Scholar
• Henningsmoen , G. 1957 . The trilobite family Olenidae . Skrifter utgitt av det Norske Videnskaps-Akademi i Oslo, Matematisk-Naturvidenskapelig Klasse , 1 : 1 – 303 .
   Google Scholar
• Jago , J.B. 1973 . Cambrian agnostid communities in Tasmania . Lethaia , 6 : 405 – 421 .
   Web of Science ®Google Scholar
• Martinsson , A. 1968 . Cambrian palaeontology of Fennoscandian basement fissures . Lethaia , 1 : 137 – 155 .
   Web of Science ®Google Scholar
• Martinsson , A. 1974 . “ The Cambrian of Norden ” . In Lower Palaeozoic Rocks of the World. 2. Cambrian of the British Isles, Norden, and Spitsbergen , Edited by: Holland , C.H. 185 – 283 . John Wiley, & Sons .
   Google Scholar
• Menard , H.W. and Boucot , A.J. 1951 . Experiments on the movements of shells by water . American Journal of Science , 249 : 131 – 151 .
   Web of Science ®Google Scholar
• Müller , K.J. and Walossek , D. 1985 . A remarkable arthropod fauna from the Upper Cambrian “Orsten” of Sweden . Transactions of the Royal Society of Edinburgh, Earth Sciences , 76 : 161 – 172 .
   Google Scholar
• Müller , K.J. and Walossek , D. 1987 . Morphology, ontogeny and life habit of Agnostus pisiformis from the Upper Cambrian of Sweden . Fossils and Strata , 19 : 1 – 124 .
   Google Scholar
• Müller , K.J. and Walossek , D. 1988 . External morphology and larval development of the Upper Cambrian maxillopod . Bredocaris admirabilis. Fossils and Strata , 23 : 1 – 70 .
   Google Scholar
• Nagle , J.S. 1967 . Wave and current orientation of shells . Journal of Sedimentary Petrology , 37 : 1124 – 1138 .
   Google Scholar
• Nielsen , A.T. 1996 . Iltsvind, sort slam og trilobiter . Varv 1996 nr , 1 : 3 – 39 .
   Google Scholar
• Öpik , A.A. 1979 . Middle Cambrian agnostids: Systematics and biostratigraphy . Bulletin of the Bureau of Mineral Resources, Geology and Geophysics , 17 : 1 – 88 .
   Google Scholar
• Piper , J.D.A. 1985 . “ Continental movements and breakup in late Precambrian and Cambrian times: Prelude to Caledonian orogenesis ” . In The Caledonide Orogen—Scandinavia and Related Areas , Edited by: Gee , D.G. and Sturt , B.A. 19 – 34 . John Wiley, & Sons .
   Google Scholar
• Robison , R.A. 1972 . Mode of life of agnostid trilobites . International Geological Congress, 24th Session, section , 7 : 33 – 40 .
   Google Scholar
• Scotese , C.R. and McKerrow , W.S. 1990 . “ Revised world maps and introduction ” . In Palaeozoic palaeogeography and biogeography , Edited by: KcKerrow , W.S. and Scotese , C.R. 1 – 21 . Geological Society of London . Memoir 12
   Google Scholar
• Thickpenny , A. 1984 . “ The sedimentology of the Swedish Alum Shale ” . In Fine grained sediments, deep water processes , Edited by: Stow , D.O.W. and Piper , J.D. 511 – 526 . Black-well .
   Google Scholar
• Thickpenny , A. 1987 . “ Palaeo-oceanography and depositional environment of the Scandinavian alum shales: Sedimentological and geochemical evidence ” . In Marine Clastic Sedimentology , Edited by: Leggett , J.K. and Zuffa , G.G. 156 – 171 . Graham, & Trotman .
   Google Scholar
• Thickpenny , A. and Leggett , J.K. 1987 . “ Stratigraphic distribution and palaeo-oceanographic significance of European early Palaeozoic organic rich sediments ” . In Marine Petroleum Source Rocks , Edited by: Brooks , J. and Fleet , A.J. 231 – 247 . Geological Society of London . Special Publications 26
   Google Scholar
• Trusheim , F. 1931 . Versuche über Transport und Ablagerung von Mollusken . Sencken-bergiana , 13 : 124 – 139 .
   Google Scholar
• Westergård , A.H. 1922 . Sveriges olenidskiffer . Sveriges Geologiska Undersökning Ca , 18 : 1 – 205 .
   Google Scholar