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  • 1
    Keywords: Brasier, M. D ; Paleontology ; Paleobiology ; Fossils ; Fossils ; Paleobiology ; Paleontology ; Electronic book ; Paläontologie ; Fossil ; Präkambrium-Kambrium-Grenze ; Proterozoikum ; Oberproterozoikum ; Aufsatzsammlung ; Ediacara-Fauna ; Kambrium ; Mikropaläontologie ; Mesoproterozoikum ; Mikrofossil ; Aufsatzsammlung ; Brasier, Martin D. 1947-2014 ; Paläontologe ; Highlands ; Biografie
    Description / Table of Contents: Dedication -- Contributions of Professor Martin Brasier to the study of early life, stratigraphy and biogeochemistry -- Understanding ancient life: how Martin Brasier changed the way we think about the fossil record -- X-ray microtomography as a tool for investigating the petrological context of Precambrian cellular remains -- Earliest microbial trace fossils in Archaean pillow lavas under scrutiny: new micro-X-ray absorption near-edge spectroscopy, metamorphic and morphological constraints -- Characterization of organic matter in the Torridonian using Raman spectroscopy -- Advanced analytical techniques for studying the morphology and chemistry of Proterozoic microfossils -- Contrasting microfossil preservation and lake chemistries within the 1200-1000 Ma Torridonian Supergroup of NW Scotland -- Evaluating evidence from the Torridonian Supergroup (Scotland, UK) for eukaryotic life on land in the Proterozoic -- Measuring the 'Great Unconformity' on the North China Craton using new detrital zircon age data -- Earth system transition during the Tonian-Cambrian interval of biological innovation: nutrients, climate, oxygen and the marine organic carbon capacitor -- Martin Brasier's contribution to the palaeobiology of the Ediacaran-Cambrian transition -- Palaeoecology of Ediacaran metazoan reefs -- Ediacaran pre-placozoan diploblasts in the Avalonian biota: the role of chemosynthesis in the evolution of early animal life -- Rangeomorph classification schemes and intra-specific variation: are all characters created equal? -- Post-fossilization processes and their implications for understanding Ediacaran macrofossil assemblages -- 'Intrites' from the Ediacaran Longmyndian Supergroup, UK: a new form of microbially-induced sedimentary structure (MISS) -- The origin and occurrence of subaqueous sedimentary cracks -- The Precambrian-Phanerozoic and Ediacaran-Cambrian boundaries: a historical approach to a dilemma -- Ichnological evidence for the Cambrian explosion in the Ediacaran to Cambrian succession of Tanafjord, Finnmark, northern Norway -- Engineering the Cambrian explosion: the earliest bioturbators as ecosystem engineers -- Remarkable preservation of brain tissues in an Early Cretaceous iguanodontian dinosaur -- Earliest Cretaceous cocoons or plant seed structures from the Wealden Group, Hastings, UK -- Chemical relationships of ambers using attenuated total reflectance Fourier transform infrared spectroscopy.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (vii, 432 Seiten) , Illustrationen
    ISBN: 9781786202932 , 178620293X
    Series Statement: Geological Society special publication no. 448
    DDC: 560
    Language: English
    Note: Includes bibliographical references and index
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  • 2
    Publication Date: 2012-04-01
    Description: Valley-filling deposits of the Nama Group, southern Namibia, record two episodes of erosional downcutting and backfill, developed close together in time near the Ediacaran-Cambrian boundary. Geochronological constraints indicate that the older valley fill began 539.4 ± 1 Ma or later; the younger of these deposits contains unusually well-preserved populations of the basal Cambrian trace fossil Treptichnus pedum. Facies analysis shows that T. pedum is closely linked to a nearshore sandstone deposit, indicating a close environmental or taphonomic connection to very shallow, mud-draped sandy seafloor swept by tidal currents. Facies restriction may limit the biostratigraphic potential of T. pedum in Namibia and elsewhere, but it also illuminates functional and ecological interpretation. The T. pedum tracemaker was a motile bilaterian animal that lived below the sediment-water interface—propelling itself forward in upward-curving projections that breached the sediment surface. The T. pedum animal, therefore, lived infaunally, perhaps to avoid predation, surfacing regularly to feed and take in oxygen. Alternatively, the T. pedum animal may have been a deposit feeder that surfaced largely for purposes of gas exchange, an interpretation that has some support in the observed association of T. pedum with mud drapes. Treptichnus pedum provides our oldest record of animals that combined anatomical and behavioral complexity. Insights from comparative biology suggest that basal Cambrian T. pedum animals already possessed the anatomical, neurological, and genetic complexity needed to enable the body plan and behavioral diversification recorded by younger Cambrian fossils.
    Print ISSN: 0883-1351
    Electronic ISSN: 0883-1351
    Topics: Geosciences
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