Taphonomy and palaeoecology in the upper Barremian of the SW Iberian chain (Spain): A model to compare taxonomy and diversity of biotas from different coeval basins

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dc.contributor.author Buscalioni, Angela D.
dc.contributor.author Martín-Closas, Carles
dc.contributor.author Munt, Martin
dc.contributor.author Barral, Abel
dc.contributor.author Tinner-Grellet, Gerald
dc.contributor.author Gómez, Bernard
dc.contributor.author Chamero, Beatriz
dc.contributor.author Delvene Ibarrola, María Graciela
dc.date.accessioned 2020-11-06T09:57:16Z
dc.date.available 2020-11-06T09:57:16Z
dc.date.issued 2018-01-15
dc.identifier.citation Palaeogeography, Palaeoclimatology, Palaeoecology, vol.490, 305-324 es_ES
dc.identifier.issn 0031-0182
dc.identifier.uri http://hdl.handle.net/20.500.12468/563
dc.description.abstract A detailed study of the floral and faunal diversity of an upper Barremian lentic ecosystem was performed by examining 50,000 microfossils. The study provides an assemblage of 41 species of charophytes, spermatophytes, ostracods, molluscs, and vertebrates (including eggshells). The main goal of this study is to reconstruct the palaeoecology of a fluvio-lacustrine and associated carbonate depositional system, by integrating the sedimentology, taphonomy, and diversity from twelve horizons cropping out in the Buenache de la Sierra and the Las Hoyas basins. The studied area corresponds to the lowermost succession of the Tragacete Formation (Serranía de Cuenca, Iberian chain). Four facies associations (polymictic alluvial; carbonate palustrine and lacustrine; eutrophic lacustrine; and calcarenitic drainage facies) were correlated to the composition of the fossil assemblages, which have yielded a set of taphofacies confirmed by the non-metric multidimensional scaling ordination test of all the horizons. The taphofacies are: (α) dominated by bones and plant leaves, (β) by charophytes-ostracods-bivalves and eggshells, and (γ) by coal-leaves and bones. The Tragacete depositional system consists of demic and mostly autochthonous (non-catastrophic) fossil associations. A mixture of aquatic and terrestrial plants, freshwater molluscs and ostracods coupled with aquatic and terrestrial vertebrate species fosters a biodiversity typical of depositional environments that are congruent with modern floodplain wetland systems. These floodplain wetlands are characterised by a combination of periodically inundated ponds, small lakes, and floodplain areas with terrestrial habitats. As such, they provide suitable environments for the diversification and colonisation of charophytes, ostracods, gastropods, fish, and an ample herpetofauna. The abundance and diversity of eggshells also suggest the development of nesting areas, whereas the occurrence of charred cheirolepidiacean conifer would indicate intermittent wild fires linked to drought events. The taxonomic breadth of this ecosystem is characterised by the taxonomic distinctness index, which, in turn, becomes a referential model to which other Lower Cretaceous microfossil sites may be compared. es_ES
dc.description.sponsorship Unidad de Paleontología, Universidad Autónoma de Madrid, España es_ES
dc.description.sponsorship Departament d'Estratigrafia, Paleontologia i Geociències Marines, Universitat de Barcelona, España es_ES
dc.description.sponsorship Instituto Geológico y Minero de España, España es_ES
dc.description.sponsorship Department of Palaeontology, The Natural History Museum, Reino Unido es_ES
dc.description.sponsorship Unité Mixte de Recherche 5276 Terre, Planètes, Environnement, Université Lyon, Francia es_ES
dc.description.sponsorship Centro Regional de Investigaciones Científicas y Transferencia Tecnológica, Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina, Argentina es_ES
dc.description.sponsorship Orcas Island Historical Museum, Estados Unidos es_ES
dc.language.iso en es_ES
dc.publisher Elsevier es_ES
dc.rights Otro es_ES
dc.subject tafonomía es_ES
dc.subject paleoecología es_ES
dc.subject Barremiense es_ES
dc.subject taxonomía es_ES
dc.subject biota es_ES
dc.subject cuenca es_ES
dc.subject Península Ibérica es_ES
dc.title Taphonomy and palaeoecology in the upper Barremian of the SW Iberian chain (Spain): A model to compare taxonomy and diversity of biotas from different coeval basins es_ES
dc.type Postprint es_ES
dc.relation.publisherversion https://www.sciencedirect.com/science/article/abs/pii/S0031018217302407?via%3Dihub#! es_ES
dc.identifier.doi https://doi.org/10.1016/j.palaeo.2017.11.009 es_ES
dc.coverage.spatialStudy Sistema Ibérico, España es_ES

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