Journal : Acta Geologica Polonica
Article : Badenian (Middle Miocene) echinoids and starfish from western Ukraine, and their biogeographic and stratigraphic significance

Authors :
Thomas, B. A.
Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, Ceredigion SY231NP, UK,,
Bek, J.
Laboratory of Palaeobiology and Palaeocology, Institute of Geology, Academy of Sciences v.v.i., Rozvojová 269, 165 00 Prague 6, Czech Republic,,
Hoşgör, I.
Viking International, Şehit Ersan Cad, 24-7, Çankaya-Ankara, Turkey,,
Štamberg, S.
Faculty of Arts, University Hradec Králové, Centre interdisciplinary research, Rokitanského 62, CZ 500 03 Hradec Králové, Czech Republic,,
Cavin, L.
Department of Geology and Palaeontology, Natural History Museum, CP 6434, 1211 Geneva 6, Switzerland,,
Grădinaru, E.
Department of Geology, Faculty of Geology and Geophysics, University of Bucharest, Blvd. Bălcescu Nicolae 1, RO-010041 Bucharest, Romania,,
Popa, L.
Department of Geology, Faculty of Geology and Geophysics, University of Bucharest, Bd. Bălcescu Nicolae 1, RO-010041 Bucharest, Romania.,,
Panaiotu, C.
Department of Mineralogy, Faculty of Geology and Geophysics, University of Bucharest, Bd. Bălcescu Nicolae 1, RO-010041 Bucharest, Romania,,
Grădinaru, E.
Department of Geology, Faculty of Geology and Geophysics, University of Bucharest, Bd. Bălcescu Nicolae 1, RO-010041 Bucharest, Romania,,
Radwański, A.
Faculty of Geology, University of Warsaw, Al. Żwirki i Wigury 93, PL-02-089 Warszawa, Poland,
Górka, M.
Faculty of Geology, University of Warsaw, Al. Żwirki i Wigury 93, PL-02-089 Warszawa, Poland,,
Wysocka, A.
Faculty of Geology, University of Warsaw, Al. Żwirki i Wigury 93, PL-02-089 Warszawa, Poland,
Abstract : Echinoderms from the Badenian (Middle Miocene) of the Fore-Carpathian Basin of western Ukraine are facies restricted. The Mykolaiv Beds, stratigraphically older, yielded the starfish Astropecten forbesi (complete skeletons), two genera of sand dollars (Parascutella, Parmulechinus), and numerous other echinoids of the genera Psammechinus , Echinocyamus, Spatangus, Hemipatagus, Echinocardium, Clypeaster, Echinolampas, and Conolampas. The stratigraphically younger, calcareous Ternopil Beds yielded Eucidaris (complete coronae, isolated spines), Arbacina , Brissus, and Rhabdobrissus. Sixteen species of echinoids are distinguished and/or commented. A new brissid, Rhabdobrissus tarnopolensis sp. nov., is established. A mass occurrence of some species (Psammechinus dubius and Hemipatagus ocellatus) contrasts with that of mass aggregations (sand dollars and Echinocardium leopolitanum) by dynamic events in selected layers of proximal tempestites. Of special note is the occurrence of very small specimens, interpreted as juveniles (‘babies’) having been swept out of their restricted biotopes (‘nurseries’). Some species hitherto regarded as of Early Miocene age, and the problem of their persistence beyond the Fore-Carpathian Basin and/or migration into that basin during the Middle Miocene transgression are discussed.

Keywords : asteroidy, jeżowce, taksonomia, nowe gatunki, skamielina, zachowanie, miocen środkowy, baden, Ukraina, asteroids, Echinoids, taxonomy, new species, fossil behaviour, ecotaphonomy, Middle Miocene (Badenian), Ukraine,
Publishing house : Faculty of Geology of the University of Warsaw
Publication date : 2014
Number : Vol. 64, no. 2
Page : 207 – 247

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Qute : Thomas, B. A. ,Bek, J. ,Hoşgör, I. ,Štamberg, S. ,Cavin, L. ,Grădinaru, E. ,Popa, L. ,Panaiotu, C. ,Grădinaru, E. ,Radwański, A. ,Górka, M. ,Wysocka, A. ,Wysocka, A. , Badenian (Middle Miocene) echinoids and starfish from western Ukraine, and their biogeographic and stratigraphic significance. Acta Geologica Polonica Vol. 64, no. 2/2014