Early-Middle Triassic fluvial ecosystems of Mallorca (Balearic Islands) : Biotic communities and environmental evolution in the equatorial western peri-Tethys
Matamales Andreu, Rafel (Institut Català de Paleontologia Miquel Crusafont)
Peñalver, Enrique (Instituto Geológico y Minero de España)
Mujal, Eudald (Institut Català de Paleontologia Miquel Crusafont)
Oms, O. (Oriol) (Universitat Autònoma de Barcelona. Departament de Geologia)
Scholze, Frank (Friedrich-Schiller-Universität Jena. Institut für Geowissenschaften (Germany))
Juárez, Josep (Museu Balear de Ciències Naturals)
Galobart, Àngel (Institut Català de Paleontologia Miquel Crusafont)
Fortuny, Josep (Institut Català de Paleontologia Miquel Crusafont)

Date:	2021
Abstract:	During the Early-Middle Triassic, the biosphere was recovering from the most severe mass extinction event of multicellular life, in the Permian-Triassic transition. Continental basins corresponding to present-day Mallorca (Balearic Islands, western Mediterranean) were located in the equatorial region of the supercontinent Pangaea, in the western peri-Tethys. Its recorded stratigraphic succession can be divided in four alluvial/fluvial formations, formally described here: Punta Roja Formation, Estellencs Formation, Pedra Alta Formation and Son Serralta Formation. Based on an exhaustive review of all available literature and new stratigraphic and palaeontological data, an upper Olenekian-lower Anisian interval is proposed for the whole succession. The richest fossil assemblage is that of Estellencs Formation, with abundant invertebrate and vertebrate trace fossils, and remains of plants, arthropods and rare fishes, which together represent a lotic/riverine ecosystem with a relatively complex food web. Plants and insects show strong biogeographical affinities with those of the Vosges, in central Europe; clam shrimps are similar to those of central Europe and Asia; and tetrapod tracks are also reminiscent to those of Eurasia and North America. Ultimately, integration of all these data provides a comprehensive and multidisciplinary characterisation of one of the oldest Triassic ecosystems of equatorial Pangaea, providing new insights to understand the evolution of palaeoenvironments of Iberian Plate, an area that has historically suffered from severe undersampling.
Grants:	Ministerio de Ciencia e Innovación FPU17/01922 Ministerio de Economía y Competitividad CGL2017-82654-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1666 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-086
Note:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Olenekian ; Anisian ; Clam shrimps ; Insects ; Tetrapod tracks ; Central Pangaea
Published in:	Earth-science reviews, (August 2021) , art. 103783, ISSN 1872-6828

DOI: 10.1016/j.earscirev.2021.103783

Postprint 77 p, 3.1 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut Català de Paleontologia Miquel Crusafont (ICP)
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