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A comparison of Asturian lepidodendroid lycophytes from the USA and the Euramerican Variscan Front
Affiliation:1. Naturalis Biodiversity Center, PO Box 9517, 2300 RA Leiden, the Netherlands;2. Laboratory of Palaeobotany and Palynology, PO Box 80.021, 3508 TA Utrecht, the Netherlands;3. LWL-Museum für Naturkunde, Westfälisches Landesmuseum mit Planetarium, Sentruper Straße 285, D-48161 Münster, Germany;4. Matthäus-Schneider-Straße 14, D-95326 Kulmbach, Germany;5. Eichbergstraße 25a, D-95369 Untersteinach, Germany;6. Museum of Nature South Tyrol, Bindergasse/via Bottai 1, 39100 Bozen/Bolzano, Italy;7. Department für Geo- und Umweltwissenschaften, Paläontologie und Geobiologie, Ludwig-Maximilians-Universität & Bayerische Staatssammlung für Paläontologie und Geologie, Richard-Wagner-Straße 10, 80333 Munich, Germany;1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Palaeoenvironment, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, PR China;2. University of Chinese Academy of Sciences, No.19 (A) Yuquan Road, Shijingshan District, Beijing 100049, PR China;3. West Bohemian Museum in Pilsen, Centrum of Palaeobiodiversity, Kopeckého sady 2, 301 00 Plzeň, Czech Republic.;4. Department of Palaeobiology and Palaeoecology, Institute of Geology v.v.i., Academy of Sciences of the Czech Republic, Rozvojová 269, 165 00 Praha 6, Czech Republic;1. Institute of Geology and Palaeontology, Charles University in Prague, Faculty of Science, Albertov 6, 128 43 Prague 2, Czech Republic;2. Department of Paleobiology and Paleoecology, Institute of Geology of the Czech Academy of Sciences, v.v.i., Rozvojová 269,165 00 Prague 6, Czech Republic;3. Department of Natural Sciences, National Museum Wales, Cardiff CF10 3NP, UK;4. Centre of Palaeobiodiversity, West Bohemian Museum in Pilsen, Kopeckého sady 2, Pilsen, 301 00, Czech Republic;1. NMNH Smithsonian Institution, Washington, DC, United States;2. The University of Texas at Austin, Austin, TX, United States;3. Westfälische Wilhelms-Universität Münster, Münster, Germany;4. National Institutes of Health, Bethesda, MD, United States;5. University of California Berkeley, Berkeley, CA, United States;1. Institute of Palaeontology, Yunnan Key Laboratory for Palaeobiology, MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Yunnan University, Kunming 650500, China;2. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China;3. School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;4. Birmingham Institute of Forest Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;5. State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
Abstract:Species belonging to the Carboniferous genera Lepidodendron and Lepidophloios are well known from the coalfields of Pennsylvania (Lower Asturian (Westphalian D) substage of the Pennsylvanian) through the publications of Lesquereux and White. They believed that the lycophyte flora was rather distinct from other contemporaneous coal floras elsewhere due to its isolation. A full revision of the lepidodendroid lycophyte species is given here and this reassessment permitted comparisons with those floras known from the European and Canadian Maritimes coalfields. Differences in species distribution suggest there was a barrier (Arcadian Highlands) to species distribution to and from the coalfields of Pennsylvania. Several species are recognized only from the coalfields of Pennsylvania, although the number has been significantly reduced from the original publications.
Keywords:Pennsylvania  Arcadian Highlands  Phytogeography  Lacoe
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