Ammonites (Phylloceratina,Lytoceratina and Ancyloceratina) and organic-walled dinoflagellate cysts from the Late Barremian in Boljetin,eastern Serbia |
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| Affiliation: | 1. Institute of Geonics, Academy of Sciences of the Czech Republic, Studentská 1768, CZ 708 00 Ostrava-Poruba, Czech Republic;2. Department of Historical and Dynamic Geology, Faculty of Mining and Geology, University of Belgrade, Kamenička 6, 11000 Belgrade, Serbia;3. Institute of Geological Engineering, VŠB – Technical University of Ostrava, 17. listopadu 15, CZ-708 33 Ostrava-Poruba, Czech Republic;4. Department of Palaeontology, Faculty of Mining and Geology, University of Belgrade, Kamenička 6, 11000 Belgrade, Serbia;1. Kotlářská 2, 611 37, Brno, Czech Republic;2. Department of Economic Geology, Faculty of Natural Sciences, Comenius University, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava, Slovakia;3. MND a.s. Úprkova 807/6, 695 01, Hodonín, Czech Republic;1. Departamento de Ciencias de la Tierra y Medio Ambiente, Universidad Alicante, Apdo. 99, San Vicente del Raspeig, 03080 Alicante, Spain;2. Departamento de Paleontología, Facultad de Ciencias Geológicas. Universidad Complutense, C/José Antonio Novais, 12, 28040, Madrid, Spain;1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;2. Energy & Geoscience Institute, University of Utah, Salt Lake City 84108, Utah, USA;3. Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;4. School of Ocean Sciences, China University of Geosciences, Beijing 100083, China;5. Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China;1. School of Mining Engineering, University College of Engineering, University of Tehran, P.O. Box 11365-4563, Tehran, Iran;2. Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, Sektion Paläozoologie, Königsbrücker Landstr. 159, D-01109 Dresden, Germany |
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| Abstract: | Late Barremian ammonite fauna from the epipelagic marlstone and marly limestone interbeds of Boljetin Hill (Boljetinsko Brdo) of Danubic Unit (eastern Serbia) is described. The ammonite fauna includes representatives of three suborders (Phylloceratina, Lytoceratina and Ancyloceratina), specifically Hypophylloceras danubiense n. sp., Lepeniceras lepense Rabrenović, Holcophylloceras avrami n. sp., Phyllopachyceras baborense (Coquand), Phyllopachyceras petkovici n. sp., Phyllopachyceras eichwaldi eichwaldi (Karakash), Phyllopachyceras ectocostatum Drushchits, Protetragonites crebrisulcatus (Uhlig), Macroscaphites perforatus Avram, Acantholytoceras cf. subcirculare (Avram), Dissimilites cf. trinodosus (d'Orbigny) and Argvethites? sp. The taxonomic composition and percent abundance of the identified ammonites indicate that their taxa are predominantly confined to the Tethyan realm. Ammonites with smooth and slightly sculptured shells predominate among the studied fauna. The ammonite-bearing succession from Boljetin represents the lower part of the Upper Barremian, ranging in ammonite zonation from the Toxancyloceras vandenheckei Zone to the lower part of the Imerites giraudi Zone. The associated organic-walled dinoflagellate cysts confirm the Late Barremian age of the ammonite-bearing levels. |
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| Keywords: | Ammonites Organic-walled dinoflagellates Palaeoenvironment Late Barremian Danubic Unit Eastern Serbia |
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