References
- Ahlberg , P. 1989 . Agnostid trilobites from the Upper Ordovician of Sweden and Bornholm, Denmark . Bulletin of the Geological Society of Denmark , 37 : 213 – 226 .
- Angelin , N.P. 1854 . Palaeontologia Scandinavica. I: Crustacea formationis transitionis . Fasc. , 2 : 21 – 92 . Leipzig and Lund
- Bergström , J. . Scania . Field excursion guide. IV International Symposium on the Ordovician System . Edited by: Bruton , D. L. and Williams , S.H. pp. 184 – 197 . Paleontological Contributions from the University of Oslo 279
- Bergström , S.M. and Nilsson , R. 1974 . Age and correlation of the Middle Ordovician bentonites on Bomholm . Bulletin of the Geological Society of Denmark , 23 : 27 – 48 .
- Bergström , S.M. , Huff , W.D. , Kolata , D.R. and Bauert , H. 1995 . Nomenclature, stratigraphy, chemical fingerprinting, and areal distribution of some Middle Ordovician K‐bentonites in Baltoscandia . GFF , 117 : 1 – 13 .
- Bruton , D.L. 1968 . The trilobite genus Panderia from the Ordovician of Scandinavia and the Baltic areas . Paleontological Contributions from the University of Oslo , 178 : 1 – 53 .
- Bruton , D.L. 1976 . The trilobite genus Phillipsinella from the Ordovician of Scandinavia and Great Britain . Palaeontology , 19 : 699 – 718 . pls. 104–108
- Ekström , G. 1937 . Upper Didymograptus Shale in Scania . Sveriges Geologiska Undersökning , C403 : 1 – 53 .
- Funkquist , H. 1919 . Asaphusregionens omfattning i sydöstra Skåne och på Bornholm . Lunds Universitets Årsskrift , 2 (1) : 1 – 55 . N.F. 16
- Hadding , A. 1913 . Undre Dicellograptusskiffern i Skåne jämte några därmed ekyivalenta bildningar . Lunds Universitets Årsskrifl , 9 (15) : 1 – 90 . N.F. 2
- Hadding , A. 1922 . Tektoniska och petrografiska undersökningar inom Fenno‐skandias randzon. 1. Röstanga‐fältet . Lunds Universitets Årsskrift , 18 (4) : 1 – 54 . N.F. 2
- Hughes , C.P. , Ingham , J.K. and Addison , R. 1975 . The morphology, classification and evolution of the Trinucleidae (Trilobita) . Philosophical Transactions of the Royal Society, London, B , 272 : 537 – 607 .
- Jaanusson , V. 1953 . Untersuchungen über baltoskandische Asaphiden. 1. Revision der mittelordovizischen Asaphiden des Siljan‐Gebietes in Dalarna . Arkiv för Mineralogi och Geologi , : 377 – 464 .
- Jaanusson , V. 1964 . The Viruan (Middle Ordovician) of Kinnekulle and northern Billingen, Västergötland . Bulletin of the Geological Institutions of the University of Uppsala , 43 : 1 – 73 .
- Jaanusson , V. . Introduction to the Ordovician of Sweden . Field excursion guide. IV International Symposium on the Ordovician System . Edited by: Bruton , D. L. and Williams , S.H. pp. 1 – 9 . Paleontological Contributions from the University of Oslo 279
- Kielan , Z. 1960 . Upper Ordovician trilobites from Poland and some related forms from Bohemia and Scandinavia . Palaeontologica Polonica , 11 : 1 – 198 .
- Kielan‐Jaworowska , Z. , Bergström , J. and Ahlberg , P. 1991 . Cheirurina (Trilobita) from the Upper Ordovician of Västergötland and other regions of Sweden . Geologiska Föreningens i Stockholm Förhandlingar , 113 : 219 – 244 .
- Lindström , M. 1953 . On the Lower Chasmops beds in the Fågelsång district (Scania) . Geologiska Föreningens i Stockholm Förhandlingar , 75 : 125 – 148 .
- Månsson , K. 1995 . Trilobites and stratigraphy of the Middle Ordovician Killeröd Formation, Scania, Sweden . GFF , 117 : 97 – 106 .
- Moberg , J.C. 1910 . Guide to Rostånga (with lake Odensjön) and Skäralid . Geologiska Föreningens i Stockholm Förhandlingar , 32 : 105 – 132 .
- Moore , R.C. , ed. 1959 . Treatise on Invertebrate Paleontology, Part O, Arthropoda 1 , 560 Lawrence, Kansas : Geological Society of America and University of Kansas Press .
- Nilsson , R. 1977 . A boring through Middle and Upper Ordovician strata at Koängen in western Scania, southern Sweden . Sveriges Geologiska Undersökning , C733 : 1 – 58 .
- Nilsson , R. 1979 . A boring through the Ordovician‐Silurian boundary in west‐em Scania, south Sweden . Sveriges Geologiska Undersökning , C 766 : 1 – 18 .
- Olin , E. 1906 . Om de Chasmopskalken och Trinucleusskiffern motsvarande bildningame i Skåne . Lunds Universitets Årsskrift , 2 (3) : 1 – 79 . N.F. 2
- Owen , A.W. 1980 . The trilobite Tretaspis from the Upper Ordovician of the Oslo region, Norway . Palaeontology , 23 : 715 – 747 .
- Owen , A.W. 1981 . The Ashgill trilobites of the Oslo Region, Norway . Palaeontographica, Beiträge zur Naturgeschichte der Vorzeit , 175 : 1 – 88 .
- Owen , A.W. 1987 . The trilobite Tretaspis at the Middle‐Upper Ordovician boundary in Västergötland . Geologiska Föreningens i Stockholm Förhandlingar , 109 : 259 – 266 .
- Owen , A.W. and Bruton , D.L. 1980 . Late Caradoc‐early Ashgill trilobites of the central Oslo Region, Norway . Paleontological Contributions from the University of Oslo , 245 : 1 – 63 .
- Regnéll , G. 1960 . “ The Lower Palaeozoic of Scania ” . In The Lower Palaeozoic of Scania; The Silurian of Gotland Edited by: Regnéll , G. and Hede , J.E. 3 – 43 . International Geological Congress XXI Session, Norden 1960, Guidebook Sweden d
- Schallreuter , R. 1983 . Sularpschiefer (Mittelordoviz) als Geschiebe in Norddeutschland . Mitteilungen Geologischen Paläontologischen Institut, Universität Hamburg , 54 : 55 – 64 .
- Siveter , D.J. 1977 . The Middle Ordovician of the Oslo region, Norway, 27. Trilobites of the family Calymenidae . Norsk Geologisk Tidsskrift , 256 : 335 – 396 .
- Siveter , D.J. 1979 . Metacalymen Kegel, 1927, a calymenid trilobite from the Kopanina Formation (Silurian) of Bohemia . Journal of Paleontology , 53 : 367 – 379 .
- Skoglund , R. 1963 . Uppermost Viruan and lower Harjuan (Ordovician) stratigraphy of Västergötland, and lower Harjuan graptolite faunas of central Sweden . Bulletin of the Geological Institutions of the University of Uppsala , 42 : 1 – 55 .
- St⊘rmer , L. 1930 . Scandinavian Trinucleidae with special reference to Norwegian species and varieties , Skrifter utgitt av det Norske Videnskaps‐Akademi i Oslo, I. Matematisk‐Naturvidenskapelige klasse 1930 1 – 111 . (4)
- Thorslund , P. 1948 . “ The Chasmops Series of the Kulltorp core ” . In Deep boring through Ordovician and Silurian Strata at Kinnekulle, Vestergötland , Bulletin of the Geological Institution of the University of Upsala Edited by: Wærn , B. , Thorslund , P. and Henningsmoen , G. Vol. 32 , 343 – 373 .
- Tömquist , S.L. 1884 . Undersökningar öfver Siljanområdets trilobitfauna . Sveriges Geologiska Undersökning , C 66 : 1 – 101 .
- Troedsson , G.T. 1918 . Om Skånes brachiopodskiffer . Lunds Universitets Årsskrift , 15 (3) : 1 – 110 . N.F. 2
- Tullberg , S.A. 1880 . Om lagerföljden i de kambriska och siluriska aflagringame vid Röstånga . Geologiska Föreningens i Stockholm Förhandlingar , 5 : 86 – 101 .
- Tullberg , S.A. 1883 . Skånes Graptoliter II. Graptolitfaunoma i Cardiolaskiffern och Cyrtograptusskiffrarne . Sveriges Geologiska Undersökning , C55 : 1 – 55 .
- Warburg , E. 1925 . The trilobites of the Leptaena Limestone in Dalarna . Bulletin of the Geological Institution of the University of Upsala , 17 : 1 – 446 .
- Whittington , H.B. 1950 . Sixteen Ordovician genotype trilobites . Journal of Paleontology , 24 (5) : 531 – 565 .