Naslov
Middle Miocene chemosymbiotic bivalves from the SW margin of the Central Paratethys (Medvednica Mt., N Croatia)

Autori
Bošnjak, Marija ; Sremac, Jasenka ; Zukon Kolić, Elen

Kolaboracija
Izvan kolaboracije

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Izvornik
Abstract Book. MedGU Annual Meeting 2022 / Ciner, Attila ; Chenchouni, Haroun ; Rodrigo-Comino, Jesús ; Bisht, Deepak Singh ; Knight, Jasper ; Barbieri, Maurizio ; Bezzeghoud, Mourad ; Radwan, Ahmed ; Zhang, Zhihua - Marakeš : Springer, 2022, 412-412

Skup
MedGU Annual Meeting 2022

Mjesto i datum
Marakeš, Maroko, 27.11.2022. - 30.11.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
chemosymbiotic bivalves, Middle Miocene, Central Paratethys, Croatia

Sažetak
Chemosymbiotic bivalves are rare and specialized biota, able to survive in hostile environments. We recorded their presence in the Middle Miocene (Badenian – Langhian/Serravallian) deposits of Northern Croatia. Bivalve specimens, representatives of the families Solemyidae (11 specimens) and Lucinidae (998 specimens) are in most cases preserved as casts and molds. Newly collected specimens (10 lucinids and 2 solemyids) were cleaned up, determined and housed at the Croatian Natural History Museum and the University of Zagreb, Faculty of Science. Lucinid bivalves are widely dispersed and comprise several taxa, including the most numerous Lucinoma borealis (Linnaeus, 1767), particularly common Lucina (Eomiltha) polymorpha Kochansky, 1944 and Megaxinus ellipticus (Borson, 1825). They were found in deposits of different lithology, varying from argillaceous marls to limestones. Lucinids are generally considered as the most diverse among the chemo-symbiotic bivalves, and are widely distributed in various habitats. Some of the collected lucinids lived in the shallower marine, oxygen-depleted environments, and we also recorded solemyids and lucinids together with planktic molluscs (pteropods) pointing to the deeper marine environments. The age of the deposits comprising these findings coincides with the Langhian opening of the marine corridors between the Paratethys and the Mediterranean during the highstands, major faunal turnover event in the Central Paratethys and Miocene Climatic Optimum. Records of chemosymbiotic bivalves and accompanied fauna in the investigated area could point to further diversification of the Badenian marine environments in this part of the Central Paratethys, and their correlation with similar contemporaneous environments and fauna in the Mediterranean.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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