Archaeopteris (Progymnospermopsida) from the Devonian of southern Africa |
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| Authors: | HEIDI M ANDERSON NORTON HILLER ROBERT W GESS |
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| Institution: | 1. Paleontology Department, Royal Belgian Institute of Natural Sciences, Rue Vautier 29, 1000 Brussels, Belgium;2. Centro de Investigaciones en Ciencias de la Tierra (CICTERRA), CONICET-Universidad Nacional de Córdoba, Edificio CICTERRA Av. Vélez Sarsfield 1611, X5016GCA, Ciudad Universitaria, Córdoba, Argentina;3. Centro de Investigaciones Paleobiológicas (CIPAL), FCEFyN, Universidad Nacional de Córdoba, Av. Velez Sarsfield 299, 5000, Córdoba, Argentina;4. Universidad Nacional de La Rioja, Av. René Favaloro s/n 5300, La Rioja, Argentina;5. Unité de Paléobiogéologie, Paléopalynologie et Paléobotanique, Dpt. de Géologie, Université de Liege, B18/P40 Boulevard du Rectorat, 4000 Liege, Belgium;6. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA): CCT CONICET-Mendoza, Av. Ruiz Leal s/n, Parque General San Martín M5502IRA, Mendoza, Argentina |
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| Abstract: | Archaeopteris notosaria sp. nov. based on one fertile and numerous sterile leafy branches is described from the Grahamstown By-Pass locality, Witpoort Formation (Witteberg Group) Upper Devonian, and represents the first unequivocal record of the genus in southern Africa. This occurrence is used, in its palaeogeographical context, to support the suggestion that climatic gradients in Late Devonian times were less steep than they are at present. |
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| Keywords: | ancient tree fossil plant geology palaeobotany |
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