0486205 - GLÚ 2019 RIV DE eng J - Journal Article
Dykan, N. - Kovalchuk, O. - Dykan, K. - Gurov, E. - Dašková, Jiřina - Přikryl, Tomáš
New data on Paleocene-Eocene fauna (gastropods, ostracods, fishes) and palynoflora of the Boltysh impact structure (Ukraine) with reference to palaeobiogeography and palaeoecology.
Neues Jahrbuch für Geologie und Paläontologie-Abhandlungen. Roč. 287, č. 2 (2018), s. 213-239. ISSN 0077-7749. E-ISSN 0077-7749
Institutional support: RVO:67985831
Keywords : pollen * gastropods * ostracods * fishes * Boltysh * Paleogene * Eastern Eurpúe
OECD category: Paleontology
Impact factor: 0.778, year: 2018 ; AIS: 0.231, rok: 2018
DOI: https://doi.org/10.1127/njgpa/2018/0714

The Boltysh impact structure (Ukraine) has preserved Paleocene–Eocene sediments that provide pollen, dinocysts, remains of plants, gastropods, ostracods, fishes and amphibians, which have all been previously described from that locality. Although fossil records from the locality are known from the second half of the 20th century, attention is being focused on it again now, due to the crater structure being newly dated at 65.59 ± 0.64 Ma. Here we describe some new material comprising palynomorphs (in total 10 plant species, fungal spores), as well as two species of gastropods, 17 species of ostracods (with three species described as new to science) and five taxa of actinopterygian fishes. Although some of the original material was not available for direct study, important data from literature (i.e. diagnoses, type specimens and significant comments) are presented. The ostracod assemblages suggest that the sediments were deposited in lake environments under marine influence, causing changes in water salinity. The fish fauna is comparable to Paleogene localities of Central and Western Europe, especially the Menat locality (late Paleocene, Thanetian), and the Eocene (Lutetian) localities of Geiseltal and Montmartre. In summary, the publication presents overview of the selected fossil groups with new interpretations and description of several taxa.
Permanent Link: http://hdl.handle.net/11104/0281063