Late Permian plant remains in the SE Iberian Ranges, Spain: Biodiversity and palaeovegetational significance

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dc.contributor.authorDiéguez, Carmen
dc.contributor.authorHorra Del Barco, Raúl De La
dc.contributor.authorLópez Gómez, José
dc.contributor.authorBenito Moreno, María Isabel
dc.contributor.authorBarrenechea, José F.
dc.contributor.authorArche, Alfredo
dc.contributor.authorLuque Del Villar, Francisco Javier
dc.date.accessioned2023-06-20T12:59:04Z
dc.date.available2023-06-20T12:59:04Z
dc.date.issued2007
dc.description.abstractThe present study focuses on the diversity and paleovegetational significance of the floristic record of the Late Permian continental Alcotas Formation, in five sections of the southeastern Iberian Ranges, central Spain. This unit, of Upper Tatarian or Lower Lopingian (Upper Permian) age, can be subdivided into three parts, represented by sediments originating from sandy and gravely braided, high-sinuosity, and sandy-braided fluvial systems developed in wide floodplains, from bottom to top respectively. Five zones, referred to as A to D, have been differentiated after correlation of the four studied sections, based on sedimentary and stratigraphical criteria. The study of megaremains recovered from the levels placed within each zone indicates changes in both biodiversity and population density. The oldest assemblage comprises impressions of leafy shoots and caules of gymnosperms. The poor preservation of some megaremains hinders their classification. A significant increase in diversity and population density is evident in the next and younger association, which shows reproductive structures and remains of leaves, trunks, and indeterminate caules of sphenopsids, cordaitales, and conifers. The next assemblage is dominated by conifers. The specimens collected mainly correspond to silicified trunk fragments, highly carbonized. A total absence of fossilised plant and trunk remains is the main characteristic of the upper part of the Alcotas Fm. The occurrence of these fossil floras is significant, due to the paucity of the fossil record of megafloras of identical or similar geological age, which has made it difficult to acquire knowledge on the development of flora and vegetation in the Upper Permian of Europe. The evolution of the biodiversity of the megafloras allows us to infer paleoecological changes for a time interval close to the end-Guadalupian biotic crisis.
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.departmentDepto. de Mineralogía y Petrología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/78340
dc.identifier.doi10.1016/j.crpv.2007.10.001
dc.identifier.issn1631-0683
dc.identifier.officialurlhttps://doi.org/10.1016/j.crpv.2007.10.001
dc.identifier.urihttps://hdl.handle.net/20.500.14352/52920
dc.journal.titleComptes rendus. Palévol
dc.language.isoeng
dc.page.final411
dc.page.initial403
dc.publisherPublished by Elsevier Masson SAS
dc.relation.projectIDCGL 2005-01520/BTE
dc.rights.accessRightsopen access
dc.subject.cdu56:551.7(460)
dc.subject.cdu561
dc.subject.keywordEnd-Guadalupian
dc.subject.keywordPlant remains
dc.subject.keywordIberian ranges
dc.subject.keywordPermian
dc.subject.keywordFlora
dc.subject.keywordFin du Guadalupien
dc.subject.keywordRestes végétaux
dc.subject.keywordChaîne Ibérique
dc.subject.keywordPermien
dc.subject.keywordFlore
dc.subject.ucmGeología estratigráfica
dc.subject.unesco2506.19 Estratigrafía
dc.titleLate Permian plant remains in the SE Iberian Ranges, Spain: Biodiversity and palaeovegetational significance
dc.title.alternativeRestes végétaux du Permien terminal dans la chaîne Ibérique sud-orientale, Espagne : biodiversité et signification paléovégétale.
dc.typejournal article
dc.volume.number6
dspace.entity.typePublication
relation.isAuthorOfPublication509bf5dc-e657-4052-8eca-019bb7e1350b
relation.isAuthorOfPublication2a461379-a8c0-4f39-871f-1e7dd971dd38
relation.isAuthorOfPublicationbba29994-5777-4092-8444-1db82ff8a2ef
relation.isAuthorOfPublication.latestForDiscovery2a461379-a8c0-4f39-871f-1e7dd971dd38
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