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Paper No. 7
Presentation Time: 10:30 AM

THE AUTONOMOUS LIFE OF THE APHLEBIA PRESL 1838: A NEWLY RECOGNIZED LATE CARBONIFEROUS GROUP APPEARED DURING THE CLIMATIC CHANGES WITHIN CENTRAL TROPICAL PANGEA


CORREIA, Pedro, Geology Centre, University of Porto, Rua do Campo Alegre, 687, Porto, 4169-007, Portugal, P?ENIÈKA, Josef, Palaeontology Department, West Bohemia Museum in Pilsen, Kopeckého sady 2, Plzeň, 301 00, Czech Republic, ?IMÙNEK, Zbynĕk, Czech Geological Survey, Klárov 3/131, Praha 1, 118 21, Czech Republic, SA, Artur A., Geosciences Center, University of Coimbra, Largo Marquês de Pombal, Coimbra, 3000-272, Portugal, MURPHY, J. Brendan, Department of Earth Sciences, St. Francis Xavier University, Antigonish, NS B2G 2W5, Canada and FLORES, Deolinda, Department of Geosciences, Environmental and Spatial Planning, Faculty of Sciences of University of Porto, Rua do Campo Alegre, 687, Porto, 4169-007, Portugal, pedro.correia@fc.up.pt

Aphlebia Presl 1838 is described in literature as a fossil macroflora commonly found in paleobiological-paleoecological interaction with Carboniferous ferns. Aphlebia is normally connected along the main axis of the fern fronds and has a variety of irregular and pinnatifid leaves which display incomplete to little visible veins that are typically parallel. Its reproduction processes are unknown. In this study, a new Aphlebia group constituted potentially by a new species was found in the Douro Carboniferous Basin (Lower Gzhelian, Upper Pennsylvanian; Portugal) with reproductive structures preserved and documented in compression-impression material. These structures like look sporangia which are typical of the Carboniferous ferns. These new records indicate that Late Carboniferous Aphlebia may have developed an autonomous life similar to the ferns that was probably driven by the climatic changes that occurred within Central Tropical Pangea during the Permian-Carboniferous. In this presentation, we also will discuss the problems of the relationship between tectonic deformation and the fossilization state of the study material.

Session No. 256

T225. Climate of the Late Paleozoic—Earth's Last Icehouse and Icehouse Collapse (Posters)
Tuesday, 29 October 2013: 9:00 AM-6:30 PM
Hall D (Colorado Convention Center)
Geological Society of America Abstracts with Programs. Vol. 45, No. 7, p.616
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