Palaeobiodiversity and Palaeoenvironments

, Volume 97, Issue 3, pp 419–438 | Cite as

Palynology, microfacies and biostratigraphy across the Daleje Event (Lower Devonian, lower to upper Emsian): new insights from the offshore facies of the Prague Basin, Czech Republic

  • Petra Tonarová
  • Stanislava Vodrážková
  • Lenka Ferrová
  • G. Susana de la Puente
  • Olle Hints
  • Jiří Frýda
  • Michal Kubajko
Original Paper


The Zlíchovian/Dalejan boundary interval (Emsian, Lower Devonian) of the Pekárek Mill section was studied employing biostratigraphy (dacryoconarid tentaculites, conodonts) and palynology (chitinozoans, prasinophytes, scolecodonts) and microfacies analysis in order to shed more light on the timing and characteristics of the Daleje Event. The results of our study stress the great importance of the base of the Nowakia elegans Zone for the substage level division of the Emsian. Onset of the Daleje transgression is linked with higher terrigenous input, and coinciding changes in the chitinozoan assemblages were recorded at this level. The transgression at the base of the N. elegans Zone preceded the main transgression taking place in the N. cancellata Zone; it can be correlated with the Upper Zlíchov Event. For the first time, Emsian chitinozoans and a jawed polychaete fauna are described in detail from the Prague Basin and can be correlated with other northern Gondwanan regions. The family-level composition of scolecodont assemblage confirms the dominance of paulinitids in the peri-Gondwanan realm.


Daleje Event Prague Basin Biostratigraphy Chitinozoans Scolecodonts Microfacies N. elegans Zone 



This research was supported by the Czech Science Foundation through the Project No. P210/12/2018. This study is a contribution to IGCP 596 (Climate change and biodiversity patterns in the Mid-Palaeozoic – Early Devonian to Early Carboniferous). One of the authors (SV) wishes to acknowledge the support of Alexander von Humboldt Foundation as part of the study was carried out during her AvH Research Fellowship in Universität Erlangen-Nürnberg. The authors gratefully acknowledge the thorough reviews by C. Klug (Paläontologisches Institut und Museum, Universität Zürich), L. Slavík (Institute of Geology AS CR, Prague) and an anonymous reviewer.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Senckenberg Gesellschaft für Naturforschung and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Czech Geological SurveyPrague 5Czech Republic
  2. 2.Institute of Geology and Paleontology, Faculty of ScienceCharles UniversityPragueCzech Republic
  3. 3.CONICET, Dpto. de Geología y Petróleo, Facultad de IngenieríaUniversidad Nacional del ComahueNeuquénArgentina
  4. 4.Institute of GeologyTallinn University of TechnologyTallinnEstonia

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