FN Archimer Export Format PT J TI A reappraisal of the taxonomy and biodiversity of the extant coccolithophore genus Palusphaera (Rhabdosphaeraceae, Prymnesiophyceae) BT AF Archontikis, Odysseas A. Young, Jeremy R. AS 1:1;2:2; FF 1:;2:; C1 Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, UK C2 UNIV OXFORD, UK UNIV COLL LONDON, UK IF 3.088 TC 1 UR https://archimer.ifremer.fr/doc/00733/84466/89528.pdf https://archimer.ifremer.fr/doc/00733/84466/89529.docx LA English DT Article CR BIOSOPE BO L'Atalante DE ;Coccolithophores;Living;Phytoplankton;Syracosphaerales;Taxonomy AB The genus Palusphaera Lecal-Schlauder emend. R.E. Norris is a distinctive modern coccolithophore that accommodates monomorphic, monothecate coccospheres with one type of spine-bearing heterococcoliths. Having examined a set of scanning electron microscopy images from our collections, we were able to demonstrate that four distinct species of Palusphaera exist in the modern oceans, including the type species Palusphaera vandelii, an informally proposed form, Palusphaera sp. 1 (type robusta) that is herein taxonomically ratified as Palusphaera crosiae sp. nov., and a distinctive morphotype, which is formally described as Palusphaera bownii sp. nov. Biometric analyses and observations on the morphologies of numerous P. vandelii specimens revealed the existence of a further form, and its commonly distinguished coccolith morphotypes are therefore taxonomically separated from Palusphaera vandelii and established as a discrete species, Palusphaera probertii sp. nov. PY 2021 PD NOV SO Phycologia SN 0031-8884 PU Informa UK Limited VL 60 IS 6 UT 000714283600001 BP 589 EP 602 DI 10.1080/00318884.2021.1965758 ID 84466 ER EF