Search academic texts

Information × Registration Number 0222U005094, 0121U110402 , R & D reports Title Reconstruction of Cenozoic marine ecosystems within the Central and Eastern Paratethys popup.stage_title Head Kovalchuk Oleksandr M., Доктор біологічних наук Registration Date 19-12-2022 Organization National Museum of Natural History National Academy of Sciences of Ukraine popup.description2 Fossil remains from the territory of Ukraine and adjacent countries were processed. The taxonomic composition and spatial distribution of crabs within the Central and Eastern Paratethys were revealed, the specifics of their habitat was reconstructed, and the reasons and features of their taphonomy in fish beds were clarified. New finds of fish remains of the genus Enchodus from the Cenomanian of Ukraine are described. Species diversity of Oligocene sharks in the eastern part of the Carpathian Basin was revealed. The existence of five shark taxa in the eastern part of the Carpathian Basin (Notorynchus primigenius, Heptranchias cf. H. tenuidens, Echinorhinus sp., Isurolamna gracilis and Alopias cf. A. superciliosus) during the Oligocene was revealed. Remains of Isurolamna gracilis and Echinorhinus sp. were first described from the Oligocene of Ukraine, whereas records of Notorynchus primigenius were first reported from the territory of the Carpathian Basin. The functional role of sharks in Oligocene ecosystems was clarified. Using methods of complex morphological analysis, a sample of gill rakers of basking sharks was identified as Keasius parvus. The role of gill raker morphology in the taxonomy of Cetorhinidae was clarified. The morphology of the skeleton of Archaeotetraodon winterbottomi is described. A series of fish otoliths from the Late Badenian deposits of the Medobory-Toutras reef structure was processed, and 11 taxa new to science were described, including 2 genera and 9 species. Early Miocene remains of fishes of the family Leiognathidae were revealed to be morphologically identical to Leiognathoides minutus from the Caucasian Basin. The Western Tethys was established to be a potential centre of origin of ponyfishes. The hypothesis of possible faunal exchange between various basins of the Paratethys during the Early Miocene was confirmed. Product Description popup.authors Barkaszi Zoltan L. Kovalchuk Oleksandr M. popup.nrat_date 2022-12-19 Close