Download or read book Trilobites of the Middle Ordovician Elnes Formation of the Oslo Region Norway written by Thomas Hansen and published by Wiley-Blackwell. This book was released on 2009-05-11 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The highly fossiliferous upper Darriwilian to lower Sandbian Elnes Formation of Norway presents an interesting insight into the general responses and preferences of Lower Palaeozoic faunas belonging to a stable, mud dominated middle to outer shelf environment in connection with a major transgressive to regressive system tract. The rich trilobite fauna consisting of nearly 100 taxa is closely linked to the changes in the environment, being most abundant in a muddy and siliciclastic dominated environment just above storm wave base. The fauna is highly endemic for the region and the remainder of Baltoscania. This monograph presents a taxonomic description of the total trilobite fauna, including a new genus and seven hitherto unknown species. New and extensive biostratigraphical data is presented on the trilobites together with a study on the biogeographical and ecological aspects of the faunas.

Download or read book Lower Ordovician trilobites of the Kirtonryggen Formation Spitsbergen written by Richard A. Fortey and published by John Wiley & Sons. This book was released on 2013-10-22 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes early Ordovician (Ibexian: Tremadocian–early Floian) trilobites from Northern Spitsbergen from the section through the Kirtonryggen Formation adjacent to Hinlopen Strait. The Formation is divided into three Members, each with distinct trilobites collectively representing the fullest known succession from the Bathyurid biofacies of the eastern Laurentian carbonate platform. Previous research on the Ordovician of Spitsbergen is summarised and correlations with similar faunas previously described from Canada, Greenland, western Newfoundland, Vermont–New York State, Oklahoma and Missouri are discussed. Taxonomic problems are discussed in detail leading to the recognition of 53 species, of which 15 are new, belonging to 31 genera including four new. Twenty-four taxa are described under open or tentative nomenclature. The lower Member yields the earliest known occurrences of the Illaenoidea, Proetoidea and Scutelluoidea, supporting the hypotheses relating the origin of new major clades to inshore habitats.

Download or read book A Global Synthesis of the Ordovician System Part 1 written by D.A.T. Harper and published by Geological Society of London Special Publications. This book was released on 2023-06-07 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ordovician was one of the longest of the geological periods, characterized by major magmatic and tectonic activity, an immense biodiversification, swings in climate and sea levels and the first Phanerozoic mass extinction. ‘A Global Synthesis of the Ordovician System’ is presented in two volumes in The Geological Society, Special Publications. This first volume (SP532) charts the history of the Ordovician System and explores significant advances in our understanding of its biostratigraphy, including more precise calibration of its timescale with tephra chronology and regional alignments using astrochronology and cyclostratigraphy. Changes in the world’s oceans, their shifting currents and sea levels, the biogeography of their biotas and the ambient climate are described and discussed against a background of changing palaeogeography. This first volume also includes syntheses of the Ordovician geology for most European countries, including historical key areas, such as Great Britain, Baltoscandia and Bohemia. The second volume (SP533) provides synthetic aspects of the Ordovician geology of most other parts of the world.

Download or read book Advances in Trilobite Research written by Isabel Rábano and published by IGME. This book was released on 2008 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Ordovician Successions of the Oslo Region Norway written by Alan W. Owen and published by . This book was released on 1990 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study subdivides the Ordovician successions of the Oslo region of southern Norway in terms of a modern lithostratigraphic scheme.

Download or read book Petroleum Abstracts written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the Geological Society of Denmark written by Dansk geologisk forening and published by . This book was released on 2001 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Trilobites from the Middle and Upper Ordovician Anders n Shale Formation in J mtland and the Equivalent Killer d Formation in Sk ne Sweden written by Kristina Månsson and published by . This book was released on 2000 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Norsk geologisk tidsskrift written by and published by . This book was released on 2005 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Trilobite Fauna of the Raheen Formation upper Caradoc Co Waterford Ireland written by A. W. Owen and published by . This book was released on 1986 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in Studies of the Lithosphere in Norway written by Y. Kristoffersen and published by . This book was released on 1988 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research papers concentrating on the mechanisms and products of two fundemental processes, rifting and continental collision, in the Phanerzoic (geologic period represented by rocks) evolution of the lithosphere in Norway.

Download or read book Transactions of the Royal Society of Edinburgh written by and published by . This book was released on 2002 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Silurian Succession of the Oslo Region written by and published by . This book was released on 1982 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ordovician of the World written by Diego García-Bellido Capdevila and published by IGME. This book was released on 2011 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silicified Middle Ordovician Trilobites written by Harry Blackmore Whittington and published by . This book was released on 1953 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Trilobites from the Long Point Group Ordovician Port Au Port Peninsula Southwestern Newfoundland written by William Thornton Dean and published by . This book was released on 1979 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A New Silurian Llandovery Telychian Sponge Assemblage from Gotland Sweden written by Freek Rhebergen and published by John Wiley & Sons. This book was released on 2014-02-27 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: A newly discovered, diverse sponge fauna of early Silurian age, is described from Gotland, Sweden. This is the first Silurian sponge assemblage known from Baltica, and the only diverse Llandoverian assemblage known worldwide. The fauna includes 20 genera and 29 species, of which three genera and six species are new. Eighteen species are new to Baltica. The fauna shows strong similarities to later Silurian assemblages in Arctic Canada, but one endemic species comprises ca. 50% of the fauna. The fauna shows that lithistid sponges recovered well from the late Ordovician extinction in some areas, and became widely spread in the early Silurian. In contrast, non-lithistid sponges like, such as hexactinellids, appear to have evolved rapidly during the Late Ordovician – early Silurian interval, and some modern groups probably originated in inshore habitats.