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Limitations on the application of the Devonian standard conodont zonation
Bultynck, P. (2007). Limitations on the application of the Devonian standard conodont zonation. Geol. Q. 51(4): 339-344
In: Geological Quarterly. Polish Geological Institute: Warsaw. ISSN 1641-7291; e-ISSN 2082-5099, more
Peer reviewed article  
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Keywords
    Geological time > Phanerozoic > Paleozoic > Palaeozoic > Devonian
    Conodonta
    Marine/Coastal
Author keywords
    Devonian; standard zonations; graphic correlation; composite standard
Author  Top 
  • Bultynck, P.
Abstract
    The most commonly used Lower and Middle Devonian conodont zonations that sometimes have been presented as standard zonations are evaluated. The author questions whether the Frasnian standard conodont zonation based on a phylogenetic succession of species belonging to the pelagic genera Mesotaxis, Palmatolepis and Siphonodella can be used for worldwide correlation. He favours the idea of an international conodont reference scale based on a synthesis of well established and documented conodont successions (with figured specimens of first and last occurrences of index-species) from key areas representing a variety of facies. Graphic correlation is likely to be the most objective and precise method to provide such a synthesis represented by the composite standard. Such standards have been already elaborated for the Frasnian and the Middle Devonian. This point of view does not imply that classical biozonations should be abandoned.
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