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Traquairaspididae and Cyathaspididae (Heterostraci) from the Lower Devonian of Poland
Institution:1. Department of Infectious Diseases, Tokyo Medical University Ibaraki Medical Center, Japan;2. Department of Clinical Laboratories, University of Tsukuba Hospital, Japan;3. Department of Infectious Diseases, University of Tsukuba Hospital, Japan;4. Department of Respiratory Medicine, Tsukuba Gakuen Hospital, Japan;5. Department of Gastroenterology and Hepatology, Ryugasaki Saiseikai Hospital, Japan;6. Department of Respiratory Medicine, Tsukuba Medical Center Hospital, Japan;7. Department of Respiratory Medicine, Tsuchiura Kyodo General Hospital, Japan;1. Institute of Petroleum Geology and Geophysics, Siberian Branch, Russian Academy of Sciences, Russia;2. Novosibirsk State University, Novosibirsk, Russia;1. Larbi Ben M''hidi University, Oum El Bouaghi. Algeria b Badji Mokhtar University, P.B. 12, 23000 Annaba. Algeria;2. Badji Mokhtar University, P.B. 12, 23000 Annaba. Algeria;3. Department of Geology, Faculty of Science, Benha University, Benha, Egypt;4. Dame du Lac 213, 3, rue Henri-Barbusse, 76300 Sotteville-lès-Rouen, France;1. Electrical Engineering Department, Kermanshah University of Technology, Kermanshah, Iran;2. Mechanical Engineering Department, Razi University, Kermanshah, Iran;3. Young Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran;4. Nuclear Science and Technology Research Institute, Tehran, Iran;1. Department of Geosciences, University of Fribourg, 6, chemin du Musée, 1700 Fribourg, Switzerland;2. Dipartimento di Scienze della Terra, Università di Torino, 35, via Valperga Caluso, 10125 Torino, Italy;3. Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, Edifici ICTA-ICP, Carrer de les Columnes s/n, Campus de la UAB, 08193 Cerdanyola del Vallès, Barcelona, Spain
Abstract:Lower Devonian strata from the drill cores from Poland have yielded new Heterostraci material. One ventral shield of Toombsaspis (Traquairaspididae, Phialaspidinae) discovered in the Bia?opole IG-1 drill core, and a fragment of dorsal shield of cf. Paraliliaspis (Cyathaspididae, Anglaspidinae) with the impressions of internal structures from Ciepielów IG-1 are described and provide new information on paleogeographic disparity of these groups.
Keywords:Agnatha  Heterostraci  Traquairaspididae  Cyathaspididae  Lower Devonian  Poland  Agnatha  Heterostraci  Traquairaspididae  Cyathaspididae  Dévonien inférieur  Pologne
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