The upper Maastrichtian dinosaur fossil record from the southern Pyrenees and its contribution to the topic of the Cretaceouse Palaeogene mass extinction event
Registro en:
Canudo, José I. and et al. (2016). The upper Maastrichtian dinosaur fossil record from the southern Pyrenees and its contribution to the topic of the Cretaceouse Palaeogene mass extinction event. Cretaceous Research; Elsevier; 57; 540-551
0195-6671
Autor
Canudo, José Ignacio
Oms, Oriol
Vila, Bernat
Galobart, Ángel
Fondevilla, Víctor
Puértolas Pascual, Eduardo
Sellés, Albert G.
Cruzado Caballero, Penélope
Dinarès Turell, Jaume
Vicens, Enric
Castanera, Diego
Company, Julio
Burrel, Laura
Estrada, Rita
Marmi, Josep
Blanco, Alejandro
Institución
Resumen
Fil: Canudo, José I. Aragosauruse IUCA, Paleontología, Facultad de Ciencias, Universidad de Zaragoza. Zaragoza, Spain Fil: Oms, Oriol. Universitat Autónoma de Barcelona, Facultat de Ciéncies (Geologia), Bellaterra, Barcelona, Spain Fil: Vila, Bernat. Aragosauruse IUCA, Paleontología, Facultad de Ciencias, Universidad de Zaragoza. Zaragoza, Spain Fil: Galobart, Ángel. Institut Catalá de Paleontologia Miquel Crusafont, C/ Escola Industrial 23, 08201, Sabadell, Spain Fil: Galobart, Ángel. Museu de la Conca Dellá, C/ del Museu 4, 25650, Isona i Conca Dellá, Lleida, Spain Fil: Fondevilla, Víctor. Universitat Autónoma de Barcelona, Facultat de Ciéncies (Geologia), Bellaterra, Barcelona, Spain Fil: Puértolas Pascual, Eduardo. Aragosauruse IUCA, Paleontología, Facultad de Ciencias, Universidad de Zaragoza. Zaragoza, Spain Fil: Sellés, Albert G. Institut Catalá de Paleontologia Miquel Crusafont, C/ Escola Industrial 23, 08201, Sabadell, Spain Fil: Cruzado Caballero, Penélope. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina. Fil: Dinarès Turell, Jaume. Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Roma, Italy Fil: Vicens, Enric. Universitat Autónoma de Barcelona, Facultat de Ciéncies (Geologia), Bellaterra, Barcelona, Spain Fil: Castanera, Diego. Aragosauruse IUCA, Paleontología, Facultad de Ciencias, Universidad de Zaragoza. Zaragoza, Spain Fil: Company, Julio. Departamento de Ingeniería del Terreno, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022, Valencia, Spain Fil: Burrel, Laura. Universitat Autónoma de Barcelona, Facultat de Ciéncies (Geologia), Bellaterra, Barcelona, Spain Fil: Estrada, Rita. Universitat Autónoma de Barcelona, Facultat de Ciéncies (Geologia), Bellaterra, Barcelona, Spain Fil: Marmi, Josep. Institut Catalá de Paleontologia Miquel Crusafont, C/ Escola Industrial 23, 08201, Sabadell, Spain Fil: Blanco, Alejandro. Institut Catalá de Paleontologia Miquel Crusafont, C/ Escola Industrial 23, 08201, Sabadell, Spain In the present paper, the fossil record of the archosaurs (dinosaurs, crocodylomorphs and pterosaurs) of the southern Pyrenees before the Cretaceous–Palaeogene (K–Pg) transition is revised. On the basis of this fossil record, a well-dated succession of dinosaurs and other archosaurs is established within polarity magnetochrons C30 and C29r. Almost 150 sites with dinosaur remains have been identified, containing hadrosauroid ornithopods, titanosaur sauropods and theropods, as well as egg sites and tracks. Fossil remains of dinosaurs and other archosaurs are abundant in C29r, disappearing abruptly near the top of the “Lower Red Garumnian” unit of the Tremp Formation. Thus this should be located very close to, or coinciding with the K–Pg boundary. These data suggest that the disappearance of the dinosaurs and other archosaurs was geologically abrupt in the southern Pyrenees, but to date there is no incontrovertible evidence of the presence of the impact level that marks the Cretaceous–Palaeogene boundary. Interestingly, what is highlighted in the southern Pyrenees is that the vertebrate-rich upper Maastrichtian continental sites were replaced by similar sedimentological facies characterized by the virtual absence not only of dinosaurs but also of any vertebrate remain throughout the lower Palaeocene. This could mean that the Danian terrestrial ecosystems of the southern Pyrenees took longer than other areas of the world to recover their biodiversity after the K−Pg extinction event. true .