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Information × Registration Number 0224U033227, (0123U102984) , R & D reports Title The role of particular fish groups in the functioning of late Mesozoic and Cenozoic ecosystems of Eastern Europe popup.stage_title Встановлення ролі різних груп риб у функціонуванні палеоценової озерної екосистеми, морфологічний аналіз решток із олігоценових відкладів й уточнення їхнього екологічного статусу, визначення таксономічного різноманіття і видового багатства міоценових і пліоценових морських екосистем Східної Європи Head Kovalchuk Oleksandr M., Доктор біологічних наук Registration Date 21-12-2024 Organization National Museum of Natural History National Academy of Sciences of Ukraine popup.description1 Elucidation of the role of individual species and fish groups in the functioning of late Mesozoic and Cenozoic marine and freshwater ecosystems of Eastern Europe. As part of the project, it is planned to study fish remains from the Cretaceous, Paleocene and Eocene deposits of Ukraine, Oligocene deposits of Poland, as well as from the Miocene and Pliocene deposits of Romania. popup.description2 Meristic and morphometric characters of the skeletons of Notogoneus gracilis (Gonorynchidae) and Boltyshia brevicauda (Umbridae) from Paleocene-Eocene lake deposits of the Boltysh impact structure were analysed. A new extinct shad genus and species – Sanalosa janulosa – is described from the Early Oligocene of the former Carpathian Basin. The similarities and differences between extinct and extant genera of herring-like fish are discussed in detail, which allows us to shed light on the relationship between them and thereby clarify the features of the evolution of representatives of this group. The results of the paleobiogeographical analysis complement the idea of ​​the distribution of herring-like fish within the Paratethys during the Oligocene. Fossil remains found within the Late Badenian (Middle Miocene) Medobory barrier reef in western Ukraine, represented mainly by otoliths, isolated teeth and other skeletal elements, provide a unique opportunity to study the fauna of fish that inhabited the backreef zone of the Central Paratethys. In total, 62 fish species from eight localities were identified, including nine species (Umbra euronota, Scythogobius minimus, Sarmatigobius cavatus, Buenia gibba, Ptereleotris tectus, Syngnathus vesculus, Apletodon conwayi, Palaeolebias winogradskyi, and Arnoglossus dispar) described as new to science. Otoliths of pipefish and gobiesocids have been recorded in the fossil record for the first time. The regularities of the formation, development and dynamics of the composition, structure and diversity of freshwater ichthyofauna in the southwestern part of Eastern Europe over the last 11 million years have been established. The time of appearance in the geological history of Europe of a number of modern taxa of species and genus rank has been established. An assessment of the taxonomic richness, diversity, and complexity of ichthyofauna communities during the late Cenozoic was conducted. Product Description popup.authors Kovalchuk Oleksandr М. popup.nrat_date 2024-12-21 Close