Download or read book Silicified Upper Ordovician Lower Silurian Ostracodes from the Avalanche Lake Area Southwestern District of Mackenzie written by Murray John Copeland and published by Geological Survey of Canada. This book was released on 1989 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Description of a silicified ostracode fauna from platform carbonates of the Whittaker and Delorme formations of the Selwyn Basin. Fourteen new genera and 45 new species are described, with a total of more than 120 taxonomic combinations reported.

Download or read book Silicified Upper Ordovician Lower Silurian Ostracodes from the Avalanche Lake Area Southwestern District of Mackenzie written by Geological Survey of Canada and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Great Ordovician Biodiversification Event written by Barry D. Webby and published by Columbia University Press. This book was released on 2004-04-14 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two of the greatest evolutionary events in the history of life on Earth occurred during Early Paleozoic time. The first was the Cambrian explosion of skeletonized marine animals about 540 million years ago. The second was the "Great Ordovician Biodiversification Event," which is the focus of this book. During the 46-million-year Ordovician Period (489–443 m.y.), a bewildering array of adaptive radiations of "Paleozoic- and Modern-type" biotas appeared in marine habitats, the first animals (arthropods) walked on land, and the first non-vascular bryophyte-like plants (based on their cryptospore record) colonized terrestrial areas with damp environments. This book represents a compilation by a large team of Ordovician specialists from around the world, who have enthusiastically cooperated to produce this first globally orientated, internationally sponsored IGCP (International Geological Correlation Program) project on Ordovician biotas. The major part is an assembly of genus- and species-level diversity data for the many Ordovician fossil groups. The book also presents an evaluation of how each group diversified through Ordovician time, with assessments of patterns of change and rates of origination and extinction. As such, it will become the standard work and data source for biotic studies on the Ordovician Period.

Download or read book Correlation of the Silurian Rocks of Southeastern and Northeastern Wisconsin Using Conodonts and Conodont Strontium Isotope Ratios and Proposed Conodont and Ostracode Biofacies Models for the Environs of the Middle Aeronian Michigan Basin written by Jeffrey J. Kuglitsch and published by . This book was released on 2000 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Palaeontographical Society written by and published by . This book was released on 2014 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mass Extinctions and Their Aftermath written by A. Hallam and published by OUP Oxford. This book was released on 1997-09-11 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why do mass extinctions occur? The demise of the dinosaurs has been discussed exhaustively, but has never been out into the context of other extinction events. This is the first systematic review of the mass extinctions of all organisms, plant and animal, terrestrial and marine, that have occurred in the history of life. This includes the major crisis 250 million years ago which nearly wiped out all life on Earth. By examining current paleontological, geological, and sedimentological evidence of environmental changes, the cases for explanations based on climate change, marine regressions, asteroid or comet impact, anoxia, and volcanic eruptions are all critically evaluated.

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 Bulletin Geological Survey of Canada written by Geological Survey of Canada and published by . This book was released on 1980 with total page 434 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 2010 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neues Jahrbuch f r Geologie und Pal ontologie written by and published by . This book was released on 1999 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of the Royal Society of Edinburgh written by and published by . This book was released on 2000 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Trilobite Zonation of Middle Ordovician Rocks Southwestern District of Mackenzie written by Rolf Ludvigsen and published by Ottawa, Canada : Energy, Mines and Resources Canada. This book was released on 1979 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Early Paleozoic Ostracoda from Southwestern District of Mackenzie and Yukon Territory written by Murray John Copeland and published by Printing and Publishing Supply and Services Canada. This book was released on 1977 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Early Paleozoic strata of the Cordilleran clastic and carbonate belts are widely distributed throughout northwestern North America. They contain varied, silicified late Ordovician, Late Silurian and Early Devonian ostracode faunas that may serve as a basis for correlation in southwestern District of Mackenzie, central Yukon Territory and eastern Alaska." --

Download or read book Silurian Wenlock Demosponges from the Avalanche Lake Area of the Mackenzie Mountains Southwestern District of Mackenzie Northwest Territories Canada written by J. Keith Rigby and published by . This book was released on 1983 with total page 43 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 1989 with total page 1576 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Bathymetry of Early Middle Ordovician Chazy Ostracodes Lower Esbataottine Formation District of Mackenzie written by Murray John Copeland and published by . This book was released on 1982 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This detailed study of silicified Ostracoda from part of the Esbataottine Formation provides a basis for correlation of circum-cratonal early Middle Ordovician rocks of North America and consideration of their conditions of deposition." --