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Middle Silurian Ludlovian And Wenlockian Sponges From Baillie Hamilton And Cornwallis Islands Arctic Canada
Download Middle Silurian Ludlovian And Wenlockian Sponges From Baillie Hamilton And Cornwallis Islands Arctic Canada full books in PDF, epub, and Kindle. Read online Middle Silurian Ludlovian And Wenlockian Sponges From Baillie Hamilton And Cornwallis Islands Arctic Canada ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Middle Silurian Ludlovian and Wenlockian Sponges from Baillie-Hamilton and Cornwallis Islands, Arctic Canada by : J. Keith Rigby
Download or read book Middle Silurian Ludlovian and Wenlockian Sponges from Baillie-Hamilton and Cornwallis Islands, Arctic Canada written by J. Keith Rigby and published by Geological Survey of Canada. This book was released on 1989 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes one of the most diverse Silurian sponge faunas known in North America. The fossils are from the Cape Phillips Formation on Baillie-Hamilton and Cornwallis islands, and are part of the distinct biogeographic realm that stretches north and west of the Transcontinental Arch. The fossils were obtained from both allochthonous and autochthonous beds that represent slope or basin margin environments of the Franklinian Geosyncline. It describes 5 new genera and 19 new species.
Book Synopsis A New Silurian (Llandovery, Telychian) Sponge Assemblage from Gotland, Sweden by : Freek Rhebergen
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.
Book Synopsis OF1994-01: Ordovician Lithistid Sponges of the Great Basin by : Ronald A. Johns
Download or read book OF1994-01: Ordovician Lithistid Sponges of the Great Basin written by Ronald A. Johns and published by NV Bureau of Mines & Geology. This book was released on 1994 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Early Palaeozoic Biogeography and Palaeogeography by : D.A.T. Harper
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.
Book Synopsis Systema Porifera by : John N.A. Hooper
Download or read book Systema Porifera written by John N.A. Hooper and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1779 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research whilst compiling this book has uncovered a fauna about twice the size as that previously published in the literature and consequently Systema Porifera revises and stabilizes the systematics of the phylum to accommodate this new knowledge in a contemporary framework. Practical tools (key illustrations, descriptions of character) are provided to facilitate the assignment of approximately 680 extant and 100 fossil genera. Systema Porifera is unique making sponge taxonomy widely available at the practical level of classification (genera, families, order). It is a taxonomic revision of sponges and spongiomorphis (such as sphinctozoans and archaeocyathans) based on re-evaluation of type materials and evidence. It is also a practical guide to sponge identification providing descriptions and illustrations of characters and interpretation of their importance to systematics. Systema Porifera addresses many long standing nomenclatural problems and provides a sound baseline for future debate on sponges and their place in time and space. Systema Porifera describes 3 classes, 7 subclasses, 24 orders, 127 families and 682 valid genera of extant sponges (with over 1600 nominal generic names and an additional 500 invalid names treated). Treatment of the fossil fauna is less comprehensive or critical, although 6 classes, 30 orders, 245 families and 998 fossil genera are mentioned. Keys to all recent and many fossil taxa are provided.
Book Synopsis Correlation Chart and Biostratigraphy of the Silurian Rocks of Canada by : B. S. Norford
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:
Book Synopsis Bulletin - Geological Survey of Canada by : Geological Survey of Canada
Download or read book Bulletin - Geological Survey of Canada written by Geological Survey of Canada and published by . This book was released on 1989 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Transactions of the Royal Society of Edinburgh by :
Download or read book Transactions of the Royal Society of Edinburgh written by and published by . This book was released on 1991 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Neues Jahrbuch für Geologie und Paläontologie by :
Download or read book Neues Jahrbuch für Geologie und Paläontologie written by and published by . This book was released on 1994 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Canadian Journal of Earth Sciences by :
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 1989 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalogue de la Commission Geologique Du Canada by : Geological Survey of Canada
Download or read book Catalogue de la Commission Geologique Du Canada written by Geological Survey of Canada and published by . This book was released on 1988 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalogue de la Commission Géologique Du Canada by : Geological Survey of Canada
Download or read book Catalogue de la Commission Géologique Du Canada written by Geological Survey of Canada and published by . This book was released on 1995 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This catalogue contains publications, maps, open files, & other outputs published between 1988 & 1994. Entries are in order according to series number, & provide typical bibliographic description as well as price. An author index concludes the document.
Download or read book Oklahoma Geology Notes written by and published by . This book was released on 2009 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government of Canada Publications, Quarterly Catalogue by :
Download or read book Government of Canada Publications, Quarterly Catalogue written by and published by . This book was released on 1990 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalogue de la CGC by : Geological Survey of Canada
Download or read book Catalogue de la CGC written by Geological Survey of Canada and published by . This book was released on 1988 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Publications in Natural History by :
Download or read book Recent Publications in Natural History written by and published by . This book was released on 1989 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sponges from the Reef Trail Member of the Upper Guadalupian (Permian) Bell Canyon Formation, Guadalupe Mountains National Park, Texas by : J. Keith Rigby
Download or read book Sponges from the Reef Trail Member of the Upper Guadalupian (Permian) Bell Canyon Formation, Guadalupe Mountains National Park, Texas written by J. Keith Rigby and published by . This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
