Record details

Title
    Trilobites and standard Devonian stage boundaries
Statement of responsibility
    Ivo Chlupáč, Raimund Feist, Pierre Morzadec
Author
    Chlupáč, Ivo, 1931-2002
    Feist, Raimund
    Morzadec, Pierre
Language
    anglicky
Source title - serial
    Courier Forschungsinstitut Senckenberg
Vol./nr.
    Vol. 220
Pages
    p. 87-98
Year
    2000
Notes
    3 obr., 4 s.bibl.
    il.
    Zkr. název ser.: Cour. Forsch.-Inst. Senckenberg
Subject group
    Barrandien
    biofacie
    biostratigrafie
    biozóna
    devon
    paleobiogeografie
    pražská pánev
    stratigrafická hranice
    Trilobita
Geographical name
    ČR-Čechy
    SRN
Keyword
    Boundaries
    Devonian
    Stage
    Standard
    Trilobites
Abstract (in english)
   A review is given of the most significant representatives of trilobite assemblages that characterise Devonian stage boundary beds in the near-shore and off-shore realm. Due to their benthic mode of life these biotas are strongly facies dependant and are confined to epicontinental platform margins.Thustheir potential for long distance biostratigraphic correlations is restricted. Clearly separated biofacies and provincialism occur especially in the Early Devonian: cosmopolitanism progressively increases through the Middle and Late Devonian. Boundary beds of the Early Devonian stages are marked by innovations that out-number extinctions in both the Bohemian and the Rhenan realm. These events slightly postdate the conodont based boundary levels. A major faunal turnover occurs and the end of the Early Devonian in the Rhenan biofacies and slightly later at the Chotec Event in the Bohemian realm.
   Both the Eifelian-Givetian and the Givetian-Frasnian boundaries are poorly defined by trilobites with most of the evolutionary lines being severely affected at the Mid-Late Givetian Taghanic Event. By contrast, the Frasnian-Famennian and the Devonian-Carboniferous boundary beds are well recognised by major extinctions and innovations related to the Upper Kellwasser and the Hangenberg Event respectively
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    19. 7. 2007
Import date
    8. 8. 2012