Mariopteris, Dicksonites and Fortopteris from the Dobrudzha Coalfield, Bulgaria

Pages: 
pp. 39-51
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 24, 1113 Sofia, Bulgaria
Abstract: 

In the Dobrudzha Coalfield, mariopterids are found frequently. They are creeping plants associated with flood plain sediments. The changes in architecture and species composition are clearly connected with variations in rain falls and the onset of periods of long, dry conditions. One specimen with seeds attached on the lower surface of a pinna proves that Mariopteris belongs to the pteridosperms. Dicksonites and Fortopteris are rare.

Keywords: 

Mariopteris, attached seed, habitat, creeping, climate, Dobrudzha Coalfield

DOI: 
10.52321/GeolBalc.41.1-3.39

VOLUME 41 (1-3)/December 2012

Faculty of Science, Department of Geology, Ferdowsi University of Mashhad, Mashhad, Iran
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Faculty of Science, Department of Geology, Ferdowsi University of Mashhad, Mashhad, Iran
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Department of Geology, Faculty of Science, University of Shahid Beheshti, Tehran, Iran
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Departamento de Ciencias de la Tierra (Paleontología) e Instituto de Investigación en Ciencias Ambientales (IUCA), Universidad de Zaragoza, C/ Pedro Cerbuna 12, E-50009 Zaragoza, Spain
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Department of Geology, Paleontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria

Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 24, 1113 Sofia, Bulgaria

Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Department of Geology, Faculty of Mining and Geology, University of Belgrade, Kamenicka 6, P.O. Box 227, 11000 Belgrade, Serbia
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 24, 1113 Sofia, Bulgaria
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Department of Geology, Faculty of Mining and Geology, University of Belgrade, Kamenicka 6, P.O. Box 227, 11000 Belgrade, Serbia

USM 203 du Muséum national d’Histoire naturelle et UMR 7207 du CNRS, 17 rue du Docteur Magnan, 75013 Paris, France
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Department of Geology and Paleontology, University of Mining and Geology “St. Ivan Rilski”, 1700 Sofia, Bulgaria

Faculty of Geology and Geoenvironment, Department of Geography-Climatology, University of Athens, Panepistimioupolis, 15784, Athens, Greece