Enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia

Abstract Sauropod remains are abundant on the Iberian Peninsula across the Jurassic-Cretaceous transition. Where the osteological record shows a high diversity of this kind of dinosaur, the ichnological findings are mainly limited to sauropod tracks characterized by kidney-shaped manus (with or with...

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Autores principales:	Fidel Torcida Fernández-Baldor, I. Díaz-Martínez, P. Huerta, D. Montero Huerta, D. Castanera
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/42713d97b5104890b2f92ca14b13e7f6
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spelling	oai:doaj.org-article:42713d97b5104890b2f92ca14b13e7f62021-12-02T17:08:23ZEnigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia10.1038/s41598-021-95675-32045-2322https://doaj.org/article/42713d97b5104890b2f92ca14b13e7f62021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95675-3https://doaj.org/toc/2045-2322Abstract Sauropod remains are abundant on the Iberian Peninsula across the Jurassic-Cretaceous transition. Where the osteological record shows a high diversity of this kind of dinosaur, the ichnological findings are mainly limited to sauropod tracks characterized by kidney-shaped manus (with or without pollex impressions) and pes impressions with three claw imprints oriented laterally. Here, we present a new sauropod ichnotaxon, Iniestapodus burgensis, found at several exposures within the Las Sereas megatracksite (Burgos, Spain). These are preserved within lacustrine limestone strata of the Rupelo Formation (Tithonian–Berriasian). Iniestapodus burgensis is characterized by: semicircular manus tracks with small pollex impressions; unusual tetradactyl pes tracks with evidence of four claws oriented anteriorly (I–II) and laterally (III–IV), of variable sizes (short claw I and IV impressions, claw II and III being the largest). The combination of features and comparison with the osteological record allows us to propose a non-titanosaurian titanosauriform as a possible trackmaker. All the Iniestapodus tracks are represented by at least two different size classes of small and medium-sized individuals, and their trackways show different multidirectional orientations. The paleoenvironmental and paleoecological data suggest that Iniestapodus trackmakers were solitary individuals, likely representing different age classes, that crossed and used the Las Sereas shallow lacustrine-palustrine areas as their preferred habitat.Fidel Torcida Fernández-BaldorI. Díaz-MartínezP. HuertaD. Montero HuertaD. CastaneraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-17 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fidel Torcida Fernández-Baldor I. Díaz-Martínez P. Huerta D. Montero Huerta D. Castanera Enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia
description	Abstract Sauropod remains are abundant on the Iberian Peninsula across the Jurassic-Cretaceous transition. Where the osteological record shows a high diversity of this kind of dinosaur, the ichnological findings are mainly limited to sauropod tracks characterized by kidney-shaped manus (with or without pollex impressions) and pes impressions with three claw imprints oriented laterally. Here, we present a new sauropod ichnotaxon, Iniestapodus burgensis, found at several exposures within the Las Sereas megatracksite (Burgos, Spain). These are preserved within lacustrine limestone strata of the Rupelo Formation (Tithonian–Berriasian). Iniestapodus burgensis is characterized by: semicircular manus tracks with small pollex impressions; unusual tetradactyl pes tracks with evidence of four claws oriented anteriorly (I–II) and laterally (III–IV), of variable sizes (short claw I and IV impressions, claw II and III being the largest). The combination of features and comparison with the osteological record allows us to propose a non-titanosaurian titanosauriform as a possible trackmaker. All the Iniestapodus tracks are represented by at least two different size classes of small and medium-sized individuals, and their trackways show different multidirectional orientations. The paleoenvironmental and paleoecological data suggest that Iniestapodus trackmakers were solitary individuals, likely representing different age classes, that crossed and used the Las Sereas shallow lacustrine-palustrine areas as their preferred habitat.
format	article
author	Fidel Torcida Fernández-Baldor I. Díaz-Martínez P. Huerta D. Montero Huerta D. Castanera
author_facet	Fidel Torcida Fernández-Baldor I. Díaz-Martínez P. Huerta D. Montero Huerta D. Castanera
author_sort	Fidel Torcida Fernández-Baldor
title	Enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia
title_short	Enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia
title_full	Enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia
title_fullStr	Enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia
title_full_unstemmed	Enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia
title_sort	enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in iberia
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/42713d97b5104890b2f92ca14b13e7f6
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Enigmatic tracks of solitary sauropods roaming an extensive lacustrine megatracksite in Iberia

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