Abstract
A total of seven species belonging to six genera of cypridoidean ostracods were recovered from three sections (Jeongchon, Hotan, and Tapri) of the Albian Jinju Formation from the Gyeongsang Basin, South Korea: Scabriculocypris yanbianensis, Cypridea khandae sp. nov., Cypridea samesi, Mongolocypris kohi, Lycopterocypris? cf. celsa, Candona sp., and Djungarica sp. Based on its morphology, C. khandae sp. nov. is considered to be the first record of the Cypridea alta-group in Korea. Although many species are endemic to the Jinju Formation, the occurrence of Scabriculocypris yanbianensis indicates that this fauna was linked with the contemporaneous fauna of the Tongfosi Formation of the Yanji Basin, northeast China. Based on previous studies and newly collected specimens, the taphonomic features of the sections indicate the presence of two distinct thanatocoenoses: a low-energy autochthonous thanatocoenosis (Jeongchon and Tapri sections) and a slightly higher energy thanatocoenosis (Hotan section). Finally, the absence of cytheroidean and darwinuloidean ostracods could be explained by the presence of unstable lake/temporal waterbodies and their low competitiveness.
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