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J. Micropalaeontol., 37, 73-86, 2018
https://doi.org/10.5194/jm-37-73-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
05 Jan 2018
Additional new organic-walled dinoflagellate cysts from two onshore UK Chalk boreholes
Martin A. Pearce Evolution Applied Limited, 50 Mitchell Way, Upper Rissington, Cheltenham, Gloucestershire, GL54 2PL, UK
Abstract. Beautifully preserved dinoflagellate cysts continue to be discovered in UK Cretaceous chalks and provide important new biostratigraphic information. Five new species – Conosphaeridium norfolkense sp. nov., Glaphyrocysta coniacia sp. nov., Impletosphaeridium banterwickense sp. nov., Sentusidinium devonense sp. nov., Sentusidinium spinosum sp. nov. and the new subspecies Spiniferites ramosus subsp. ginakrogiae subsp. nov. – are described from Upper Cretaceous strata of the British Geological Survey (BGS) Banterwick Barn and Trunch boreholes (onshore UK). An emended diagnosis for Odontochitina diducta Pearce is also provided to broaden the morphological variability in the type material.

Citation: Pearce, M. A.: Additional new organic-walled dinoflagellate cysts from two onshore UK Chalk boreholes, J. Micropalaeontol., 37, 73-86, https://doi.org/10.5194/jm-37-73-2018, 2018.
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Short summary
Five new species of organic-walled dinoflagellate cysts are described from the Upper Cretaceous strata of the British Geological Survey (BGS) Banterwick Barn and Trunch boreholes (onshore UK).
Five new species of organic-walled dinoflagellate cysts are described from the Upper Cretaceous...
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