A new vertebrate assemblage from the matute formation of the Cameros Basin (Ágreda, Spain): implications for the diversity during the jurassic/cretaceous boundary
Puértolas Pascual, Eduardo (Universidad de Zaragoza. Departamento de Ciencias de la Tierra)
Aurell, Marcos (Universidad de Zaragoza. Departamento de Ciencias de la Tierra)
Bermúdez-Rochas, David D. (Universidad Autónoma de Madrid. Departamento de Didácticas Específicas)
Canudo, José Ignacio (Universidad de Zaragoza. Departamento de Ciencias de la Tierra)
Galobart, Àngel (Institut Català de Paleontologia Miquel Crusafont)
Moreno-Azanza, Miguel (Universidad de Zaragoza. Departamento de Ciencias de la Tierra)
Pérez-García, Adán (Universidad Nacional de Educación a Distancia (Espanya). Facultad de Ciencias)
Castanera, Diego (Museo Aragonés de Paleontología)
Fernandes, A. E. (Bayerische Staatssammlung für Paläontologie und Geologie)

Data:	2023
Resum:	The Ribota site (Ágreda, Soria, Spain) is a new locality in the Matute Formation (Tithonian-Berriasian) composed of several carbonate layers, outstandingly rich in macrovertebrate remains. Fossils show an unusual replacement of the original bioapatite by quartz, and are found as positive reliefs protruding from lacustrine limestone beds. This type of conservation has allowed the identification of around one hundred vertebrate bone accumulations in an outcrop of more than 10 hectares. Osteichthyans (articulated partial skeletons, cranial material, and isolated postcranial bones and scales), crocodylomorphs (disarticulated cranial material, isolated teeth, vertebrae and osteoderms), turtles (partial carapaces and plastra, but also isolated plates) and pterosaurs (cranial and appendicular elements) have been identified. Around 80 specimens have been collected and a preliminary study of part of the collection (35 specimens) has allowed the identification of at least 5 different taxa: Halecomorphi indet. , Neoginglymodi indet. , Goniopholididae indet. , Testudinata indet. , and Pterodactyloidea indet. This new site represents one of the few sites from this time interval preserved in a fully lacustrine environment, so these vertebrate assemblages are unique and composed of different animals that presumably lived around and within the lake. They are dominated by aquatic and amphibian vertebrates and was formed by attrition in this lacustrine environment, possibly far from the lake shoreline. These macrovertebrate assemblages provide new data about the diversity in the faunal ecosystems from the Jurassic/Cretaceous transition of the Iberian Basin Rift System.
Ajuts:	Agencia Estatal de Investigación PGC2018-094034-B-C21 Ministerio de Economía y Competitividad PID2021-122612OB- I00 Ministerio de Ciencia e Innovación RYC2021-034473 Agència de Gestió d'Ajuts Universitaris i de Recerca BP2017-00195
Nota:	Altres ajuts: Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Osteichthyes ; Crocodylomorpha ; Testudinata ; Pterosauria ; Tera Group ; Tithonian-Berriasian
Publicat a:	Journal of Iberian Geology, Published online october 2023, ISSN 1886-7995

DOI: 10.1007/s41513-023-00220-y

21 p, 3.6 MB

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