Download or read book Ludlow and Pridoli Upper Silurian Graptolites from the Arctic Islands Canada written by Alfred C. Lenz and published by NRC Research Press. This book was released on 2004 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graptolites flourished from earliest Ordovician to Early Devonian, a time range of about 90 million years, and were widely distributed as marine benthic and planktonic colonial organisms around then-world.
Download or read book Graptolite Paleobiology written by Jörg Maletz and published by John Wiley & Sons. This book was released on 2017-05-08 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The graptolites constitute one of the geologically most useful taxonomic groups of fossils for dating rock successions, understanding paleobiogeography and reconstructing plate tectonic configurations in the Lower Palaeozoic. Graptolites were largely planktic, marine organisms, and as one of the first groups that explored the expanses of the world’s oceans are vital for understanding Palaeozoic ecology. They are the best and often the only fossil group for dating Lower Palaeozoic rock successions precisely. Thousands of taxa have been described from all over the planet and are used for a wide variety of geological and palaeontological (biological) research topics. The recent recognition of the modern pterobranch Rhabdopleura as a living benthic graptolite enables a much better understanding and interpretation of the fossil Graptolithina. In the decades since the latest edition of the Graptolite Treatise, the enormous increase of knowledge on this group of organisms has never been synthesised in a compelling and coherent way, and information is scattered in scientific publications and difficult to sort through. This volume provides an up-to-date insight into research on graptolites. Such research has advanced considerably with the use of new methods of investigation and documentation. SEM investigation and research on ultrastructure of the tubaria has made it possible to compare extant and extinct taxa in much more detail. Cladistic interpretation of graptolite taxonomy and evolution has advanced the understanding of this group of organisms considerably in the last two decades, and has highlighted their importance in our understanding of evolutionary processes. This book will show graptolites, including their modern, living relatives, in a quite new and fascinating light, and will demonstrate the impact that the group has had on the evolution of the modern marine ecosystem. This book is aimed not only at earth scientists but also at biologists, ecologists and oceanographers. It is a readable and comprehensible volume for students at the MSc level, while remaining accessible to undergraduates and non-specialists seeking up-to-date information about this fascinating topic in palaeobiology.
Download or read book Early Palaeozoic Biogeography and Palaeogeography written by D.A.T. Harper and published by Geological Society of London. This book was released on 2014-01-27 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Early Palaeozoic was a critical interval in the evolution of marine life on our planet. Through a window of some 120 million years, the Cambrian Explosion, Great Ordovician Biodiversification Event, End Ordovician Extinction and the subsequent Silurian Recovery established a steep trajectory of increasing marine biodiversity that started in the Late Proterozoic and continued into the Devonian. Biogeography is a key property of virtually all organisms; their distributional ranges, mapped out on a mosaic of changing palaeogeography, have played important roles in modulating the diversity and evolution of marine life. This Memoir first introduces the content, some of the concepts involved in describing and interpreting palaeobiogeography, and the changing Early Palaeozoic geography is illustrated through a series of time slices. The subsequent 26 chapters, compiled by some 130 authors from over 20 countries, describe and analyse distributional and in many cases diversity data for all the major biotic groups plotted on current palaeogeographic maps. Nearly a quarter of a century after the publication of the ‘Green Book’ (Geological Society, London, Memoir12, edited by McKerrow and Scotese), improved stratigraphic and taxonomic data together with more accurate, digitized palaeogeographic maps, have confirmed the central role of palaeobiogeography in understanding the evolution of Early Palaeozoic ecosystems and their biotas.
Download or read book Earth and Life written by John A. Talent and published by Springer Science & Business Media. This book was released on 2012-06-28 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the broad pattern of increasing biodiversity through time, and recurrent events of minor and major ecosphere reorganization. Intense scrutiny is devoted to the pattern of physical (including isotopic), sedimentary and biotic circumstances through the time intervals during which life crises occurred. These events affected terrestrial, lacustrine and estuarine ecosystems, locally and globally, but have affected continental shelf ecosystems and even deep ocean ecosystems. The pattern of these events is the backdrop against which modelling the pattern of future environmental change needs to be evaluated.
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2007 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Geotechnical Journal written by and published by . This book was released on 2008 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acta palaeontologica Polonica written by and published by . This book was released on 2007 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Correlation Chart and Biostratigraphy of the Silurian Rocks of Canada written by B. S. Norford and published by . This book was released on 1997 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 1997 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Palaeozoic Vertebrate Biochronology and Global Marine non marine Correlation written by Alain Blieck and published by . This book was released on 2000 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Geology of Devon Island North of 76 Canadian Arctic Archipelago western Part of Cardigan Strait Map Area Prince Alfred Bay Map Area and Parts of Adjacent Maps NTS 59A B C and 69A D written by Ulrich Mayr and published by . This book was released on 1998 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography and Index of Geology written by and published by . This book was released on 1990 with total page 1660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by Geological Survey of Canada and published by . This book was released on 1950 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Extinction written by Ashraf M.T. Elewa and published by Springer Science & Business Media. This book was released on 2007-12-03 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book combines three main aspects: five major mass extinctions; contributions on some other minor extinctions; and more importantly contributions on the current mass extinction. All three aspects are introduced through interesting studies of mass extinctions in diverse organisms ranging from small invertebrates to mammals and take account of the most accepted subjects discussing mass extinctions in insects, mammals, fishes, ostracods and molluscs.
Download or read book Records of the Australian Museum written by Australian Museum and published by . This book was released on 1998 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silurian late Llandovery Ludlow Atrypid Brachiopods from Gotland Sweden and the Welsh Borderlands Great Britain written by Paul Copper and published by NRC Research Press. This book was released on 2004 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The morphology, evolution, and paleoecology of the highly successful Silurian atrypide spire-bearers is described in detail, including the documentation of several new species. Numerous detailed illustrations and plates accompany the text.
Download or read book Proceeding of the 7th International Graptolite Conference Field Meeting of the Subcommission on Silurian Stratigraphy written by Gladys Ortega and published by . This book was released on 2003 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
