机译:Cyclic changes in Pennsylvanian paleoclimate and effects on floristic dynamics in tropical Pangaea
National Museum of Natural History MRC-121, Smithsonian Institution, Washington, DC 20560, USA;
Department of Geology, University of California, Davis, CA 95616, USA;
Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey TW20 OEX, UK;
Upland flora; Conifers; Cordaitaleans; Coal; Paleosol; Glaciation;