A riparian plant community from the upper Maastrichtian of the Pyrenees (Catalonia,NE Spain) |
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| Institution: | 1. Institut Català de Paleontologia Miquel Crusafont, C/ Escola Industrial 23, 08201 Sabadell, Catalonia, Spain;2. Departament d’Estratigrafia, Paleontologia i Geociències Marines, Universitat de Barcelona-UB, c/Martí i Franquès s/n, 08028 Barcelona, Catalonia, Spain;3. Instituto de Geociencias (CSIC, UCM), Facultad de Geología, C/ Jose Antonio Novais 12, 28040 Madrid, Spain;4. Departament de Geologia, Universitat Autònoma de Barcelona, Avinguda de l''Eix central s/n, 08193 Bellaterra, Catalonia, Spain;5. CNRS-UMR5276 LGL-TPE, Université Lyon 1 (Claude Bernard), OSU Lyon, 69622 Villeurbanne, France;1. Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Università di Catania, Via A. Longo, 19, I-95128 Catania, Italy;2. Grant Institute, School of GeoSciences, The King''s Buildings, University of Edinburgh, James Hutton Road, Edinburgh EH9 3FE, United Kingdom;3. School of Ocean and Earth Science, National Oceanography Centre, University of Southampton, European Way, Southampton SO14 3ZH, United Kingdom;4. Museo Civico di Storia Naturale, Via degli Studi 9, 97013 Comiso, Ragusa, Italy;5. Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Alma Mater Studiorum, Università di Bologna, Via Zamboni, 67, 40126 Bologna, Italy;6. Dipartimento di Scienze della Terra, Università degli Studi di Torino, Via Valperga Caluso, 35, 10125 Torino, Italy;7. Istituto di Geoscienze e Georisorse CNR, 56124 Pisa, Italy;1. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Av. Ángel Gallardo 470 (C1405DJR), Buenos Aires, Argentina;2. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET);3. División Paleontología Vertebrados, Museo de La Plata, Universidad Nacional de La Plata, Paseo del Bosque s/n., B1900FWA, La Plata, Argentina;4. Fundación de Historia Natural “Félix de Azara”, Universidad Maimónides, Hidalgo 775 (C1405BDB), Buenos Aires, Argentina;5. Dirección Nacional del Antártico - Instituto Antártico Argentino, Cerrito 1248, Buenos Aires 1010, Argentina;1. Birbal Sahni Institute of Palaeosciences, 53 University Road, Lucknow 226007, India;2. Department of Geology, Banaras Hindu University, Varanasi 221005, India;3. French Institute of Pondicherry, No. 11, Post Box No. 33, Saint Louis Street, Pondicherry 605001, India;1. ITT Fossil, Instituto Tecnológico de Micropaleontologia, Universidade do Vale do Rio dos Sinos (UNISINOS), Av. UNISINOS, 950, B. Cristo Rei/CEP: 93.022-000, São Leopoldo, RS, Brazil;2. Instituto Antártico Argentino (IAA), Buenos Aires, Argentina;3. IDEAN-CONICET, Departamento de Ciências Geológicas, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428, Buenos Aires, Argentina;4. Department of Earth Sciences, University College London, Gower Street, London, WC1E 6BT, UK;5. Museu Nacional – Universidade Federal do Rio de Janeiro, Brazil |
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| Abstract: | Angiosperms began to colonise riparian habitats very soon in their evolutionary history, probably already in the Aptian, but it is still poorly known when flowering plants finally dominated entirely these kind of communities as they do in the present. A new fossil plant locality (Molí del Baró-1) from the upper Maastrichtian of the Southern Pyrenees is described in which meandering river facies represent one of the first riparian communities formed only by angiosperms. The fossil assemblage consists of abundant leaves, seeds, logs and sporomorphs. Angiosperms remains dominate in all these cases and the leaf sample is mostly composed of a new eudicot willow-like species, Saliciphyllum gaetei sp. nov., the palm Sabalites longirhachis and an helophytic monocot. Pollen remains suggest that the later belonged to Typhaceae. Most of these plant remains were parautochthonous and deposited in a pond formed in the accretional part of a meander loop. The locality of Molí del Baró-1 represents an unique plant fossil assemblage in the uppermost Cretaceous of southern Europe. It clearly differs from those reported in other Maastrichtian localities of the Pyrenees (Fumanya and South Isona) and from the Campanian-Maastrichtian of Austria and Romania. In addition, it reflects a surprisingly modern physiognomy for a Late Cretaceous riverine plant assemblage that was built up with willow-like plants, palms and reeds. |
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| Keywords: | Riparian community Maastrichtian Angiosperms Pollen Spores Tremp Syncline |
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