Biochronology and Paleontology of Uppermost Triassic (Rhaetian) Radiolarians, Queen Charlotte Islands, British Columbia, Canada PDF Download

Author: Elizabeth S. Carter
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 196

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Thèse. Biologie. Médecine. 1993

Author:
Publisher:
ISBN:
Category : Geodynamics
Languages : en
Pages : 147

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Author: P. De Wever
Publisher: CRC Press
ISBN: 9789056993368
Category : Science
Languages : en
Pages : 700

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Radiolarians in the Sedimentary Record presents the current state of knowledge on fossil radiolarians. The author discusses the record, as well as new integrated taxonomic systems at the family level. The book provides comprehensive coverage of the fossil record of these unicellular organisms. It also discusses their important role in the history of the Earth and their development of the biosphere. This text will prove indispensable for graduate students and researchers in geology, oceanography and earth sciences.

Author: Spencer G. Lucas
Publisher: Geological Society of London
ISBN: 9781862392960
Category : Cyclostratigraphy
Languages : en
Pages : 528

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Book Description
The Mesozoic Era begins with the approximately 50-million-year-long Triassic Period, a major juncture in Earth history when the vast Pangaean supercontinent completed its assembly and began its fragmentation, and the global biota diversified and modern-ized after the end-Permian mass extinction, the most extensive biotic decimation of the Phanerozoic. The temporal ordering of geological and biotic events during Triassic time thus is critical to the interpretation of some unique and pivotal events in Earth his-tory. This temporal ordering is mostly based on the Triassic time-scale, which has been developed and refined for nearly two centu-ries. This book reviews the state of the art of the Triassic timescale and includes comprehensive analyses of Triassic radio-isotopic ages, magnetostratigraphy, isotope-based and cyclostratigraphic correlations and timescale -relevant marine and non-marine bio-stratigraphy.

Author: J. W. Haggart
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 94

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Author: Elizabeth S. Carter
Publisher:
ISBN: 9780660175249
Category : Paleontology
Languages : en
Pages : 162

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The excellent preservation of radiolarians in formations on the Queen Charlotte Islands, and the precision to which they can be dated from closely associated ammonites and other fossils, makes them especially suitable for constructing integrated biochronological zonations and detailed taxonomic studies. The purpose of this study is to develop a detailed radiolarian zonation for the Lower Jurassic, to integrate new radiolarian zones with ammonite assemblages for that period, to document the range and distribution of the Queen Charlotte Islands radiolarians as completely as possible, and to describe new taxa. The first part reviews the lithostratigraphy of the formations studied, the independent fossil dating methods used, the diversity and composition of the radiolarian faunas observed, the radiolarian biochrolology and chronostratigraphy, and paleobiogeography of the area's radiolarians and ammonites. Part 2 is a systematic palaeontology describing radiolarian species by suborder, family, and genus.

Author: David Lazarus
Publisher: John Wiley & Sons
ISBN: 1119697468
Category : Science
Languages : en
Pages : 528

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Polycystine radiolaria are exclusively marine protists and are found in all ocean waters, from polar regions to the tropics, and at all water depths. There are approximately 600 distinct described living species and several thousand fossil species of polycystines. Radiolarians in general, and polycystines in particular, have recently been shown to be a major component of the living plankton and important to the oceanic carbon cycle. As fossils radiolarians are also fairly common, and often occur in sediments where other types of fossils are absent. This has made them very valuable for certain types of geologic research, particularly estimating the geologic age of the sediments containing them, and as guides to past oceanic water conditions. As our current understanding of the biology, and even taxonomy of the living fauna is still very incomplete, evolutionary studies based on living polycystines are still rare. However, the common occurrence of numerous specimens for many species, and in a wide variety of oceanic environments, provides an excellent opportunity to study the processes of biologic evolution in the fossil record. Paleobiology of the Polycystine Radiolaria is the first major book on radiolarians to appear in the western literature since 2001. Focusing on living and fossil siliceous shelled radiolarians, it is notable for its emphasis not upon morphologic or taxonomic detail but on concepts and applications. The book attempts to provide a balanced, critical review of what is known of the biology, ecology, and fossil record of the group, as well as their use in evolutionary, biostratigraphic and paleoceanographic research. Full chapters on the history of study, and molecular biology, are the first ever in book form. Written for an audience of advanced undergraduate to doctoral students, as well as for a broad range of professionals in the biological and Earth sciences, Paleobiology of the Polycystine Radiolaria summarizes current understanding of the marine planktonic protist group polycystine radiolaria, both in living and fossil form.

Author: Spencer G. Lucas
Publisher: New Mexico Museum of Natural History and Science
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 247

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Author: Spencer G. Lucas
Publisher: New Mexico Museum of Natural History and Science
ISBN:
Category :
Languages : en
Pages : 423

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Author: Špela Gorièan
Publisher: Založba ZRC
ISBN: 9616568655
Category : Micropaleontology
Languages : en
Pages : 450

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