Middle Eocene Cassidae, Charoniidae, Cymatiidae and Personidae species are described illustrated from the Hungarian Paleogene Basin. Pseudosassia n. gen. eight new designated: Cassis kalmani sp., gurdoni traceyi Monoplex s.l. szakonyii Cymatiella dulaii Parasassia vargai Protoplex ? zsoldosi Personopsis merlei sp. Genus Semiranella De Gregorio, 1880 is assigned to family Charoniidae. Sconsia cy...