FN Archimer Export Format PT J TI Taxonomy and morphology of Calciopappus curvus sp. nov. (Syracosphaeraceae, Prymnesiophyceae), a novel appendage-bearing coccolithophore BT AF Archontikis, Odysseas A. Millán, Josué G. Andruleit, Harald Cros, Lluïsa Kleijne, Annelies Heldal, Mikal Doan-Nhu, Hai Winter, Amos Blanco-Bercial, Leocadio Young, Jeremy R. AS 1:1,2;2:3;3:4;4:5;5:6;6:7;7:8;8:3;9:9;10:10; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:; C1 Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK Department of Earth Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK Department of Earth and Environmental Systems, Indiana State University, Terre Haute, Indiana 47809, USA Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Stilleweg 2, 30655 Hannover, Germany Institut de Ciències del Mar, CSIC, Passeig Marítim de la Barceloneta, 37–49. E–08003 Barcelona, Spain Plankton Diversity and Evolution Group, Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, The Netherlands Department of Biological Sciences, University of Bergen, Thormøhlensgate 53 A/B, 5020 Bergen, Norway Institute of Oceanography, Viet Nam Academy of Science and Technology, 01 Cau Da, Nha Trang, Viet Nam Bermuda Institute of Ocean Sciences – Arizona State University, 17 Biological Station, St. George’s GE01, Bermuda Department of Earth Sciences, University College London, London WC1E 6BT, UK C2 UNIV OXFORD, UK NHM, UK UNIV INDIANA, USA BGR, GERMANY ICM CSIC, SPAIN NATURALIS BIODIVERS CTR, NETHERLANDS UNIV BERGEN, NORWAY VIETNAM ACAD SCI & TECHNOL, VIETNAM UNIV ARIZONA STATE, BERMUDA UNIV COLL LONDON, UK IF 2.5 TC 0 UR https://archimer.ifremer.fr/doc/00848/96017/104015.pdf https://archimer.ifremer.fr/doc/00848/96017/104216.xlsx LA English DT Article CR BIOSOPE BO L'Atalante DE ;Biodiversity;Lower Photic Zone;Morphology;Phytoplankton;Syracosphaerales;Taxonomy AB Based on scanning electron microscopy observations, a new species of the coccolithophore genus Calciopappus (Syracosphaeraceae, Prymnesiophyceae) is described from the surface waters off Bergen and from the lower photic zone of sub-tropical and tropical waters. Morphological, coccolith rim structure and biometric analyses strongly support separation of this morphotype from the two described Calciopappus species, but inclusion of it within the genus. The new form differs from the other species in being noticeably smaller and in morpho-structural details of each of the three coccolith types that form the coccosphere: 1) the body coccoliths have an open central area; 2) the whorl coccoliths have a wide central opening and two thumb-like protrusions; and 3) the appendage coccoliths are curved. On this basis, the species is formally described as Calciopappus curvus sp. nov., its systematic affinity is discussed and compared with other extant coccolithophores. PY 2023 PD OCT SO Protist SN 1434-4610 PU Elsevier BV VL 174 IS 5 UT 001058052500001 DI 10.1016/j.protis.2023.125983 ID 96017 ER EF