author 1J.J. Moratalla. Instituto Geológico y Minero de España (Igme), Museo Geominero, Ríos Rosas 23, 28003 Madrid, Spain. This email address is being protected from spambots. You need JavaScript enabled to view it.

Ph.D. Scientific Researcher (paleontology) in the Instituto Geologico y Minero de España (IGME) (Museo Geominero), Madrid, Spain, -Spanish Geological Survey-. The research has been mainly focused on dinosaur trace fossils (tracks and eggs). The author has discovered, excavated and studied many dinosaur tracksites from the Cameros Basin (Lower Cretaceous, La Rioja province, Spain). So, the main focuss of his research is related with dinosaur paleoichnology and its implications: locomotion, identification, preservation, paleobiogeographical implications, etc. Today, he is part of the Research Team on the Las Hoyas locality, with publications on birds and pterosaur bone record.

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author 2J. Marugán-Lobón. Unidad de Paleontología, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain and Dinosaur Institute, Natural History Museum of Los Angeles County, Los Angeles, CA, USA. This email address is being protected from spambots. You need JavaScript enabled to view it.

Ph.D. Paleontologist from the Paleontology Department of the Universidad Autonoma de Madrid (Spain). His work has been focused on the application of Geometric Morphometrics tools to vertebrate comparative anatomy, ontogenic development, evolution and phylogeny, of Cretaceous birds, pterosaurs, and mammals. Today he is part of the Work Team at Las Hoyas fossil site.

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author 3H. Martín-Abad. Jurassica Museum, Route de Fontenais 21, 2900 Porrentruy, Switzerland. This email address is being protected from spambots. You need JavaScript enabled to view it. and Department of Geosciences, University of Fribourg, Chemin du Musée 6, 1700 Fribourg, Switzerland

Ph.D. Paleontologist from the Paleontology Department of the Universidad Autonoma de Madrid (Spain). His work has mainly been focused on the study of Cretaceous fishes from the Las Hoyas fossil site, their evolution, paleoecology and paleobiogeographical implications. Today he is part of the Work Team at Las Hoyas fossil site.

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author 4E. Cuesta. Unidad de Paleontología, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain. This email address is being protected from spambots. You need JavaScript enabled to view it.

Ph.D. Paleontologist from the Paleontology Department of the Universidad Autonoma de Madrid (Spain). Her work has been focused on theropod dinosaurs, mainly on the carcharodontosaurid Concavenator corcovatus, from the Las Hoyas fossil site. Today she is part of the Work Team at Las Hoyas fossil site.

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author 5A.D. Buscalioni. Unidad de Paleontología, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain. This email address is being protected from spambots. You need JavaScript enabled to view it..

Ph.D. Paleontologist from the Paleontology Department of the Universidad Autonoma de Madrid (Spain). She is today responsible of the Direction of the Work Team at Las Hoyas fossil site. Her work has mainly been focused on phylogeny, evolution and paleoecology of Mesozoic continental vertebrates, mainly crocodiles, dinosaurs, birds, pterosaurs, etc.