Theropod teeth from the upper Barremian (Lower Cretaceous) of Vadillos-1, Spain
EntityUAM. Departamento de Biología; UAM. Departamento de Geología y Geoquímica
10.1016/j.cretres.2022.105392Cretaceous Research 142: (2023): 105392
ISSN0195-6671 (print); 1095-998X (online)
Funded byThe authors express their gratitude to all the collaborating paleontologists for their participation in the field-exploration and excavation campaigns at the Vadillos-1 in 2018. These campaigns were carried out with authorization VC/SPA/180388 issued by the Direccion General de Patrimonio y Museos of the Junta de Castilla-La Mancha, and were developed in collaboration with the Town Councils of Beteta and Canizares. Research Projects VC/SPA/180388, SBPLY/19/180801/000071 and SBPLY/21/180801/000055 of the Junta de Castilla-La Mancha (Spain). Post-doctoral Grant Margarita Salas from the Complutense University of Madrid (UCM CT31/21)
SubjectsDromaeosauridae; Eudromaeosauria; Iberian Peninsula; Lower Cretaceous; Tyrannosauroidea; Biología y Biomedicina / Biología; Geología
Rights© 2022 The Author(s)
Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
The upper Barremian (Lower Cretaceous) palaeontological site of Vadillos-1 is located in the North of the Cuenca Province, Spain. It includes a sedimentary succession in “Weald” facies of brown and grey mudstones and red clays, corresponding to an alluvial-palustrine muddy floodplain. Among the collected fossils, there are several vertebrate remains belonging to theropod dinosaurs, including some teeth (VD1-197, VD1-178, VD1-179, and VD1-180) that are described and identified for the first time. The taxonomic assignment was approached following two methods beside the classical consideration of their overall morphology: a cladistic analysis performed on a tooth-based data matrix, and a discriminant analysis performed on a large dataset including measurements of non-avian theropod teeth. The DSDI > 1.2 and the braided enamel present seen in VD1-197 suggest that the specimen belongs to a Dromaeosauridae or a non-tyrannosaurid Tyrannosauroidea, but the cladistics analysis classifies this tooth in the latest. The analysis showed that VD1-178, VD1-179 and VD1-180 can be ascribed to Dromaeosauridae. The dental features characteristic of this clade and present in our specimens include a DSDI > 1.2, labial and lingual depressions, and a braided enamel surface texture, which allows to place these teeth more specifically within the Eudromaeosauria. The results show, for the first time, the presence of dromaeosaurids and possibly non-Tyrannosaurid Tyrannosauroidea at Vadillos-1, thus providing new data to the European Barremian record, and contributing to the updating the geographic distribution of these dinosaurs
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Google Scholar:Berrocal Casero, Mélani - Alcalde Fuentes, María Rosario - Audije Gil, Julia - Sevilla, Paloma
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