Hiddenocysta matsuokae gen. et sp. nov. from the Holocene of Vancouver Island, British Columbia, Canada

Type Article
Date 2021-01
Language English
Author(s) Gurdebeke Pieter R.1, Mertens KennethORCID2, Meyvisch Pjotr1, Bogus Kara3, Pospelova Vera4, 5, Louwye Stephen1
Affiliation(s) 1 : Department of Geology, Ghent University, Belgium;
2 : Ifremer, LER BO, Station de Biologie Marine, Concarneau CEDEX, France;
3 : Camborne School of Mines, University of Exeter, Penryn, Cornwall, UK;
4 : Department of Earth and Environmental Sciences, University of Minnesota, Minneapolis, MN, USA;
5 : School of Earth and Ocean Sciences, University of Victoria, Victoria, British Columbia, Canada
Source Palynology (0191-6122) (Informa UK Limited), 2021-01 , Vol. 45 , N. 1 , P. 103-114
DOI 10.1080/01916122.2020.1750500
WOS© Times Cited 3
Keyword(s) dinoflagellate cyst, taxonomy, North Pacific ocean, FTIR, wall composition, gonyaulacoid

A new dinoflagellate cyst genus and species are described here as Hiddenocysta gen. nov. and Hiddenocysta matsuokae sp. nov. from Holocene sediments in a core from the west coast of Vancouver Island (British Columbia, Canada). The genus Hiddenocysta encompasses spherical to ovoid skolochorate cysts, characterized by a gonyaulacoid plate pattern and a 2P precingular archeopyle. The species H. matsuokae is characterized by a granular wall and slender trifurcate processes with heavily perforated process bases. Two end members are described here based on process morphology and number of processes (formas 1 and 2). Cyst wall chemistry is analyzed using micro-Fourier transform infrared (FTIR) spectroscopy and reveals a unique dinosporin composition consistent with a gonyaulacoid autotrophic feeding strategy.

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