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Information × Registration Number 0225U004422, (0125U001270) , R & D reports Title Species composition and palaeobiogeographic analysis of Miocene fish assemblages of the Forecarpathian Basin popup.stage_title Узагальнення відомостей про історію формування Передкарпатського басейну, огляд попередніх палеоіхтіологічних досліджень у межах цього регіону, опрацювання решток акул, скатів і променеперих риб середньоміоценового віку за матеріалами із західної України та південної Польщі Head Kovalchuk Oleksandr М., Доктор біологічних наук Registration Date 04-12-2025 Organization National Museum of Natural History National Academy of Sciences of Ukraine popup.description1 To establish the taxonomic composition and clarify the parameters of the distribution and palaeoecology of cartilaginous and ray-finned fish communities within the former Forecarpathian Basin during the Middle Miocene (15.97–11.61 million years ago). popup.description2 The taxonomic composition of fish assemblages from Middle Miocene deposits of southern Poland, which 15–13 million years ago formed the north‑western part of the Precarpathian Basin, has been described and analysed. In total, 423 specimens were studied, the majority of which belong to ray‑finned fishes and sharks. The latter represent the most diverse group (13 families, 5 orders), dominated by sand tiger sharks (Carchariidae) and requiem sharks (Carcharhinidae). Ninety‑two per cent of the examined ray‑finned fish specimens belong to representatives of the family Sparidae. For the first time in the Precarpathian Basin, the presence of five‑gilled sawsharks Pristiophorus sp., as well as Araloselachus vorax and Raja gentili, has been established, while Trigonodon jugleri and Diplodus sitifensis were documented for the first time in the north‑western part of the investigated region. The data obtained support the concept of continuity in the evolution of ichthyofaunas across different basins of the Paratethys during the Miocene. A series of ray‑finned fish remains from Lower Badenian deposits near the settlements of Hlukhivets and Rozvadiv in Lviv Region has also been described. In total, 16 fish taxa were identified, belonging to the families Sphyraenidae, Trichiuridae, Labridae, Acanthuridae, Sparidae, Tetraodontidae, and Diodontidae. Acanthurus haueri, Oligodiodon sp., Diodontidae gen. et sp. indet., Tetraodontiformes indet., and the orders they represent are recorded for the first time within the Precarpathian Basin. An early Sarmatian vertebrate assemblage has been described from the Kharaluh locality (Rivne Region). Fish remains were assigned to 5 genera and 3 families (Cyprinidae, Siluridae, and Percidae), among which perches are represented by the largest number of bones. The taxonomic composition of this palaeoassemblage is relatively poor and appears similar to assemblages of the Bessarabian stage of development of the Eastern Paratethys. Product Description popup.authors Kovalchuk Oleksandr M. Anastasiia V. Dubikovska popup.nrat_date 2025-12-04 Close