FN Archimer Export Format PT J TI Fensomea setacea, gen. & sp. nov. (Cladopyxidaceae, Dinophyceae), is neither gonyaulacoid nor peridinioid as inferred from morphological and molecular data BT AF Gottschling, Marc Carbonell-Moore, Maria Consuelo Mertens, Kenneth Kirsch, Monika Elbrächter, Malte Tillmann, Urban AS 1:1;2:2;3:3;4:4;5:5;6:6; FF 1:;2:;3:PDG-ODE-LITTORAL-LERBO;4:;5:;6:; C1 Department Biologie: Systematik, Biodiversität & Evolution der Pflanzen, GeoBio-Center, Ludwig‐Maximilians-Universität München, Menzinger Str. 67, 80 638, München, Germany Department of Botany and Plant Pathology, College of Agricultural Sciences, Oregon State University, 2082 Cordley Hall, Corvallis, OR, 97331-2902, USA Ifremer, LITTORAL, Station de Biologie Marine, Place de la Croix, BP40537, 29900, Concarneau CEDEX, France Fachbereich Geowissenschaften-Fachrichtung Historische Geologie/Paläontologie, Universität Bremen, Klagenfurter Straße, 28359, Bremen, Germany Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Sylt, Hafenstr. 43, 25 992, List/Sylt, Germany Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27 570, Bremerhaven, Germany C2 UNIV MUNCHEN, GERMANY UNIV OREGON STATE, USA IFREMER, FRANCE UNIV BREMEN, GERMANY INST A WEGENER, GERMANY INST A WEGENER, GERMANY SI CONCARNEAU SE PDG-ODE-LITTORAL-LERBO IN WOS Ifremer UPR DOAJ copubli-europe copubli-int-hors-europe IF 4.997 TC 5 UR https://archimer.ifremer.fr/doc/00700/81224/85514.pdf https://archimer.ifremer.fr/doc/00700/81224/85515.pdf https://archimer.ifremer.fr/doc/00700/81224/85516.nex LA English DT Article AB Dinophyte evolution is essentially inferred from the pattern of thecal plates, and two different labelling systems are used for the important subgroups Gonyaulacales and Peridiniales. The partiform hypotheca of cladopyxidoid dinophytes fits into the morphological concepts of neither group, although they are assigned to the Gonyaulacales. Here, we describe the thecate dinophyte Fensomea setacea, gen. & sp. nov., which has a cladopyxidoid tabulation. The cells displayed a Kofoidean plate formula APC, 3′, 4a, 7″, 7C, 6S, 6′′′, 2′′′′, and slender processes were randomly distributed over the echinate or baculate surface. In addition, we obtained rRNA sequences of F. setacea, gen. & sp. nov., but dinophytes that exhibit a partiform hypotheca did not show a close relationship to Gonyaulacales. Character evolution of thecate dinophytes may have progressed from the ancestral state of six postcingular plates, and two more or less symmetrically arranged antapical plates, towards patterns of only five postcingular plates (Peridiniales) or more asymmetrical configurations (Gonyaulacales). Based on our phylogenetic reconsiderations the contact between the posterior sulcal plate and the first postcingular plate, as well as the contact between an antapical plate and the distalmost postcingular plate, do not represent a rare, specialized gonyaulacoid plate configuration (i.e., the partiform hypotheca of cladopyxidoid dinophytes). Instead, these contacts correspond to the common and regular configuration of peridinioid (and other) dinophytes. PY 2021 PD JUL SO Scientific Reports SN 2045-2322 PU Springer Science and Business Media LLC VL 11 IS 1 UT 000664915500050 DI 10.1038/s41598-021-92107-0 ID 81224 ER EF