Record details

    Trilobites and standard Devonian stage boundaries
Statement of responsibility
    Ivo Chlupáč, Raimund Feist, Pierre Morzadec
    Chlupáč, Ivo, 1931-2002
    Feist, Raimund
    Morzadec, Pierre
Source title - serial
    Courier Forschungsinstitut Senckenberg
    Vol. 220
    p. 87-98
    3 obr., 4 s.bibl.
    Zkr. název ser.: Cour. Forsch.-Inst. Senckenberg
Subject group
    pražská pánev
    stratigrafická hranice
Geographical name
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
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    19. 7. 2007
Import date
    8. 8. 2012