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Review

The Tetrapod Fossil Record from the Uppermost Maastrichtian of the Ibero-Armorican Island: An Integrative Review Based on the Outcrops of the Western Tremp Syncline (Aragón, Huesca Province, NE Spain)

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Grupo Aragosaurus-IUCA, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna, 12, 50009 Zaragoza, Aragón, Spain
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Área de Paleontología, Departamento de Biología Animal, Edafología y Geología, Universidad de La Laguna, 38200 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain
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Instituto de Investigación en Paleobiología y Geología (IIPG), Universidad Nacional de Río Negro, 8500 Río Negro, Argentina
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IIPG, UNRN, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), 2300 Buenos Aires, Argentina
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GEOBIOTEC, Department of Earth Sciences, NOVA School of Science and Technology, Campus de Caparica, 2829-516 Caparica, Portugal
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Espaço Nova Paleo, Museu de Lourinhã, Rua João Luis de Moura 95, 2530-158 Lourinhã, Portugal
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Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, c/ Escola Industrial 23, 08201 Sabadell, Barcelona, Spain
*
Author to whom correspondence should be addressed.
Academic Editors: Angelos G. Maravelis and Jesus Martinez-Frias
Geosciences 2021, 11(4), 162; https://doi.org/10.3390/geosciences11040162
Received: 25 February 2021 / Revised: 23 March 2021 / Accepted: 26 March 2021 / Published: 2 April 2021
The South-Pyrenean Basin (northeastern Spain) has yielded a rich and diverse record of Upper Cretaceous (uppermost Campanian−uppermost Maastrichtian) vertebrate fossils, including the remains of some of the last European dinosaurs prior to the Cretaceous-Paleogene (K-Pg) extinction event. In this work, we update and characterize the vertebrate fossil record of the Arén Sandstone and Tremp formations in the Western Tremp Syncline, which is located in the Aragonese area of the Southern Pyrenees. The transitional and continental successions of these sedimentary units are dated to the late Maastrichtian, and exploration of their outcrops has led to the discovery of numerous fossil remains (bones, eggshells, and tracks) of dinosaurs, including hadrosauroids, sauropods, and theropods, along with other tetrapods such as crocodylomorphs, testudines, pterosaurs, squamates, and amphibians. In particular, this fossil record contains some of the youngest lambeosaurine hadrosaurids (Arenysaurus and Blasisaurus) and Mesozoic crocodylomorphs (Arenysuchus and Agaresuchus subjuniperus) in Europe, complementing the lower Maastrichtian fossil sites of the Eastern Tremp Syncline. In addition, faunal comparison with the fossil record of Hațeg island reveals the great change in the dinosaur assemblages resulting from the arrival of lambeosaurine hadrosaurids on the Ibero-Armorican island, whereas those on Haţeg remained stable. In the light of its paleontological richness, its stratigraphic continuity, and its calibration within the last few hundred thousand years of the Cretaceous, the Western Tremp Syncline is one of the best places in Europe to study the latest vertebrate assemblages of the European Archipelago before the end-Cretaceous mass extinction. View Full-Text
Keywords: late Maastrichtian; Western Tremp Syncline; Southern Pyrenees; tetrapods; Ibero-Armorican island late Maastrichtian; Western Tremp Syncline; Southern Pyrenees; tetrapods; Ibero-Armorican island
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MDPI and ACS Style

Pérez-Pueyo, M.; Cruzado-Caballero, P.; Moreno-Azanza, M.; Vila, B.; Castanera, D.; Gasca, J.M.; Puértolas-Pascual, E.; Bádenas, B.; Canudo, J.I. The Tetrapod Fossil Record from the Uppermost Maastrichtian of the Ibero-Armorican Island: An Integrative Review Based on the Outcrops of the Western Tremp Syncline (Aragón, Huesca Province, NE Spain). Geosciences 2021, 11, 162. https://doi.org/10.3390/geosciences11040162

AMA Style

Pérez-Pueyo M, Cruzado-Caballero P, Moreno-Azanza M, Vila B, Castanera D, Gasca JM, Puértolas-Pascual E, Bádenas B, Canudo JI. The Tetrapod Fossil Record from the Uppermost Maastrichtian of the Ibero-Armorican Island: An Integrative Review Based on the Outcrops of the Western Tremp Syncline (Aragón, Huesca Province, NE Spain). Geosciences. 2021; 11(4):162. https://doi.org/10.3390/geosciences11040162

Chicago/Turabian Style

Pérez-Pueyo, Manuel, Penélope Cruzado-Caballero, Miguel Moreno-Azanza, Bernat Vila, Diego Castanera, José Manuel Gasca, Eduardo Puértolas-Pascual, Beatriz Bádenas, and José Ignacio Canudo. 2021. "The Tetrapod Fossil Record from the Uppermost Maastrichtian of the Ibero-Armorican Island: An Integrative Review Based on the Outcrops of the Western Tremp Syncline (Aragón, Huesca Province, NE Spain)" Geosciences 11, no. 4: 162. https://doi.org/10.3390/geosciences11040162

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