A new integrated morpho- and molecular systematic classification of Cenozoic radiolarians (Class Polycystinea) - suprageneric taxonomy and logical nomenclatorial acts Author Suzuki, Noritoshi Author Caulet, Jean-Pierre Author Dumitrica, Paulian text Geodiversitas 2021 2021-07-08 43 15 405 573 journal article 5275 10.5252/geodiversitas2021v43a15 a8353504-9387-42cf-8d81-8ecacbe9bd90 1638-9395 5101757 urn:lsid:zoobank.org:pub:DC259A19-9B35-4B33-AD9F-44F4E1DA9983 Family COLLOPHIDIIDAE Biard & Suzuki in Biard, Pillet, Decelle, Poirier, Suzuki & Not, 2015 Collophidiidae Biard & Suzuki in Biard, Pillet, Decelle, Poirier, Suzuki & Not, 2015: 384 . Collophidae – Ishitani et al. 2012 [no pages can be specified due to ambiguous indication, no type genus indication, and grammatic error in name formation, unavailable name]. TYPE GENUS. — Collophidium Haeckel, 1887: 26 [ type species by subsequent designation ( Campbell 1954 : D44): Collozoum serpentinum Haeckel, 1887: 26 ]. INCLUDED GENERA. — Collophidium Haeckel, 1887: 26 . NOMEN DUBIUM. — Colloprunum . DIAGNOSIS. — Collophidiidae are Colonial Collodaria with a variable elongated, cylindrical, or spherical appearance. Each colony is comprised of a delicate gelatinous material that encompasses the scattered algal symbionts and the string-like aggregations. A stringlike aggregation includes tens to a hundred collodarian cells within a firm gelatinous material. The central capsule is of an elongated cylindrical shape, with an endoplasm highly vacuolated. STRATIGRAPHIC OCCURRENCE. — Living. REMARKS The taxonomic independency of Collophidium was initially recognized by the studies of Anderson et al. (1999) . This was achieved by the observation of ultrafine cellular structure and the publication of “living” images.Their results were later supported by a molecular phylogenetic study by Ishitani et al. (2012) . The microbial eukaryotes (0.8-20 Μm) of the bathypelagic zone ( 3000-4000 m in water depth) in global oceans are dominated by Collophidium , suggesting the important role of this genus in the deep-ocean ( Pernice et al. 2016 ). This family can be easily distinguished from the other collodarian families by the presence of cell-embedded sacks observed within the gelatinous matter. Many undescribed genera and species are encountered in plankton samples. Four Collophidium species were drawn in figs 10-13 of Strelkov & Reshetnyak (1971) but need to be described again as new species due to their identification based on the unillustrated species of Haeckel (1887) .