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Volume 37, issue 1 | Copyright
J. Micropalaeontol., 37, 17-20, 2018
https://doi.org/10.5194/jm-37-17-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 05 Jan 2018

Research article | 05 Jan 2018

Fetchamium prolixispinosum gen. et comb. nov. (division Dinoflagellata)

Martin A. Pearce1 and Graham L. Williams2 Martin A. Pearce and Graham L. Williams
  • 1Evolution Applied Limited, 50 Mitchell Way, Upper Rissington, Cheltenham, Gloucestershire, GL54 2PL, UK
  • 2Natural Resources Canada, Geological Survey of Canada (Atlantic), Bedford Institute of Oceanography, P.O. Box 1006, Dartmouth, Nova Scotia B2Y 4A2, Canada

Abstract. Oligosphaeridium is a gonyaulacacean dinocyst lacking cingular processes and possessing a distinctive process centred on the antapical plate indicating a sexiform hyposomal tabulation. However, specimens referable to the description of Oligosphaeridium prolixispinosum Davey and Williams, 1966, although lacking cingular processes, are clearly not sexiform. As an additional complication, the holotype of Oligosphaeridium prolixispinosum possesses cingular processes. In this brief contribution, we describe the new genus Fetchamium to accommodate the new transfer Fetchamium prolixispinosum gen. et comb. nov. and provide a discussion and emended diagnosis of the species.

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This paper describes a new genus of organic-walled dinoflagellate cysts to accommodate the transfer of a problematic species.
This paper describes a new genus of organic-walled dinoflagellate cysts to accommodate the...
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