Abstract
The article provides the systematic description of eight species of ostracods described by Dykan (2018, 2020), belonging to the genera Bythocypris, Pontocypris, Pterygocythereis, Bosquetina, Acantocythereis and Cytherella, as well as eleven species in open nomenclature (sp., cf., ex gr.) of the genera Argilloecia, Loxoconcha, Sarsicytheridea, Pontocytheroma, Echinocythereis, Paleoblitacythereis, Pseudobosquetina and Bythoceratina. The ostracods derive from Upper Quaternary, Holocene and modern deposits of the southwestern part of the Tyrrhenian Sea. Sampling stations cover shelf, continental slope and deep water basin in 65-3500 m water depth. The systematic section provides synonymy, detailed descriptions, ecology, geographical and stratigraphical distribution of species. SEM-images of external and internal structures of the carapace like hinge, normal pore canals, macro- and mesosculpture are provided. The documented species belong to North Atlantic, West Atlantic, South Antarctic and Mediterranean zoogeographic groups according to the zoogeographical classification developed for the ostracods of the Tyrrhenian Sea.
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