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oai:gredos.usal.es:10366/1556682025-04-30T19:47:16Zcom_10366_4128com_10366_4055com_10366_3946com_10366_3823col_10366_4129

Salgado, Leonardo Canudo, José Ignacio Garrido, Alberto C. Moreno-Azanza, Miguel Martínez, Leandro C. A. Coria, Rodolfo A. Gasca Pérez, José Manuel Supplementary information accompanies this paper at http://www.nature.com/srep We describe a new species of an ornithischian dinosaur, Isaberrysaura mollensis gen. et sp. nov. The specimen, consisting in an almost complete skull and incomplete postcranium was collected from the marine-deltaic deposits of the Los Molles Formation (Toarcian-Bajocian), being the first reported dinosaur for this unit, one of the oldest from Neuquén Basin, and the first neornithischian dinosaur known from the Jurassic of South America. Despite showing a general stegosaurian appearance, the extensive phylogenetic analysis carried out depicts Isaberrysaura mollensis gen. et sp. nov. as a basal ornithopod, suggesting that both Thyreophora and neornithischians could have achieved significant convergent features. The specimen was preserved articulated and with some of its gut content place in the middle-posterior part of the thoracic cavity. Such stomach content was identified as seeds, most of them belonging to the Cycadales group. This finding reveals a possible and unexpected role of this ornithischian species as seed-dispersal agent. 2024-02-10 2024-02-10 2017 info:eu-repo/semantics/article http://hdl.handle.net/10366/155668 10.1038/SREP42778 2045-2322 eng https://www.nature.com/articles/srep42778 CGL2014- 53548-P http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Nature