The dinoflagellate cyst genera Achomosphaera Evitt 1963 and Spiniferites Mantell 1850 in Pliocene to modern sediments: a summary of round table discussions


Kenneth Neil Mertens, IFREMER Institut Francais de Recherche pour l'Exploitation de la Mer
Nicolas Van Nieuwenhove, Aarhus Universitet
Pieter R. Gurdebeke, Universiteit Gent
Hilal Aydin, Celal Bayar Üniversitesi
Kara Bogus, Texas A&M University
Manuel Bringué, University of South Carolina
Barrie Dale, Universitetet i Oslo
Stijn De Schepper, Bjerknes Centre for Climate Research
Anne de Vernal, Université du Québec à Montréal
Marianne Ellegaard, Københavns Universitet
Arjen Grothe, Utrecht University
Haifeng Gu, State Oceanic Administration China
Martin J. Head, Brock University
Maija Heikkilä, Helsingin Yliopisto
Audrey Limoges, Geological Survey of Denmark and Greenland
Laurent Londeix, Université de Bordeaux
Stephen Louwye, Universiteit Gent
Fabienne Marret, University of Liverpool
Edwige Masure, Museum National d'Histoire Naturelle
Kazumi Matsuoka, Institute for East China Sea Research (ECSER)
Peta J. Mudie, Geological Survey of Canada
Aurélie Penaud, Institut Universitaire Européen de la Mer (IUEM)
Vera Pospelova, University of Victoria
Andrea Michelle Price, Université McGill
Sofia Ribeiro, Geological Survey of Denmark and Greenland
André Rochon, Institut des Sciences de la Mer de Rimouski
Francesca Sangiorgi, Utrecht University
Michael Schreck, UiT The Arctic University of Norway
Vladimir Torres, ExxonMobil Exploration Company
Serdar Uzar, Celal Bayar Üniversitesi
Gerard J.M. Versteegh, Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
Sophie Warny, Louisiana State University
Karin Zonneveld, Universität Bremen

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© 2018, © 2018 The Author(s). Published by AASP–The Palynological Society. We present a summary of two round-table discussions held during two subsequent workshops in Montreal (Canada) on 16 April 2014 and Ostend (Belgium) on 8 July 2015. Five species of the genus Achomosphaera Evitt 1963 and 33 of the genus Spiniferites Mantell 1850 emend. Sarjeant 1970 occuring in Pliocene to modern sediments are listed and briefly described along with remarks made by workshop participants. In addition, several holotypes and topotypes are reillustrated. Three species previously assigned to Spiniferites are here considered/accepted as belonging to other genera: Impagidinium inaequalis (Wall and Dale in Wall et al. 1973) Londeix et al. 2009, Spiniferites? rubinus (Rossignol 1962 ex Rossignol 1964) Sarjeant 1970, and Thalassiphora balcanica Balteş 1971. This summary forms the basis for a set of papers that follows, where points raised during the workshops are explored in greater detail.

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