Please use this identifier to cite or link to this item:
DC FieldValueLanguage
dc.contributor.authorCarvalho, Ismar de Souza-
dc.contributor.authorCunha, Pedro Proença-
dc.contributor.authorFigueiredo, Silvério M.D.-
dc.description.abstractAt Cabo Mondego (western central Portugal), the Upper Jurassic marine to coastal succession contains several stratigraphic levels preserving dinosaur footprints on the surface bedding plane, as well as convolute bedding and soft sediment injection structures interpreted as dinoturbation structures. At least nineteen new three-dimensional structures observed in cross-sections are interpreted as produced by dinosaur trampling. The identification of three-dimensional structures of dinosaur footprints provides an important complement to the information obtained from footprints preserved on single bedding surfaces, such as the substrate consistency, potential trackmaker identification, and the possibility to enhance the distinction of sauropods and tridactyl dinosaurs, and paleoenvironmental interpretations. In the lower part of the Arenitos da Boa Viagem Formation, eight levels of probable lowermost Kimmeridgian age (ca. 157–156 Ma), displaying the above-mentioned deformational structures, were analyzed in detail. They support interpretations concerning the relationship between the footprints and the substrate consistency at the time of their formation. Three distinct cohesiveness patterns, defined by the penetration of the feet from the paleosurface, are the result of different degrees of substrate cohesiveness. Identifying the trackmakers of levels belonging to the middle Oxfordian–lower Kimmeridgian has important implications for Late Jurassic ecosystem reconstructions, as the footprints observed in Cabo Mondego indicate a change in the morphotypes throughout the Upper Jurassic
dc.description.sponsorshipThis research was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico and Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (E-26/202.910/2017). This work was also funded by the Fundação para a Ciência e Tecnologia (FCT), through national funds, by the projects UIDB/MAR/04292/2020 (Marine and Environmental Sciences Center) and UID/Multi/00073/2020 (Centro de Geociências, Universidade de Coimbra).pt
dc.subjectDinoturbationdinosaur footprintspt
dc.subjectCabo Mondegopt
dc.subjectUpper Jurassicpt
dc.subjectLusitanian Basinpt
dc.titleDinoturbation in Upper Jurassic siliciclastic levels at Cabo Mondego (Lusitanian Basin, Portugal): evidences in a fluvial-dominated deltaic successionpt
item.fulltextCom Texto completo-
item.grantfulltextembargo_20220630- of Sciences and Technology- of Coimbra- - Marine and Environmental Sciences Centre-
Appears in Collections:I&D CGUC - Artigos em Revistas Internacionais
Files in This Item:
File Description SizeFormat Login
1-s2.0-S1871174X21000706-main.pdf8.61 MBAdobe PDFEmbargo Access    Request a copy
Show simple item record

Page view(s)

checked on Nov 25, 2021


checked on Nov 25, 2021

Google ScholarTM




This item is licensed under a Creative Commons License Creative Commons