118084 20240319081003.0 doi 10.1093/zoolinnean/zlac021 sideral 128977 ART-2022-128977 eng Díaz-Berenguer, Ester Neurocranial bones are key to untangling the sea cow evolutionary tree: osteology of the skull of Sobrarbesiren cardieli (Mammalia: Pan-Sirenia) 2022 Access copy available to the general public Unrestricted The pan-sirenian Bauplan is conservative, probably owing to the constraints of adaptation to an aquatic lifestyle. Gathering morphological data from extinct forms is complex, resulting in poorly resolved phylogenies for stem pan-sirenians. Extant sirenians ossify the falx cerebri and the tentorium cerebelli, membranes of the dura mater of the brain attached to the parietal bone. Nevertheless, these ossifications are not present in some pan-sirenians. The basioccipital bone has received little attention in the literature except for establishing the relative age of individuals. Here, we present new cranial elements and a detailed description of the skull of Sobrarbesiren cardieli, a stem pan-sirenian from the Lutetian of Spain represented by eight individuals; we study its intraspecific variation and palaeoecological implications and explore the evolution of the endocranial structures and the basioccipital bone in pan-sirenians. Six new phylogenetic characters are added to the latest pan-sirenian dataset, resulting in a well-resolved topology where Sobrarbesiren is recovered close to the root, in a clade with Prototherium and Eotheroides aegyptiacum. The basioccipital bone and the ossified endocranial membranes have a phylogenetic signal, and the absence of such endocranial structures represents the plesiomorphic condition for pan-sirenians and is not diagnostic for the family Protosirenidae as previously believed. info:eu-repo/grantAgreement/ES/DGA/E18-17R info:eu-repo/grantAgreement/ES/MINECO/CGL2013-47521-P info:eu-repo/grantAgreement/ES/MINECO-FEDER/CGL2017-85038-P info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.8 2022 ZOOLOGY 12 / 176 = 0.068 2022 Q1 T1 1.055 2022 Ecology, Evolution, Behavior and Systematics 2022 Q1 Animal Science and Zoology 2022 Q1 6.4 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Moreno-Azanza, Miguel Universidad de Zaragoza (orcid)0000-0002-7210-1033 Badiola, Ainara Canudo, José Ignacio Universidad de Zaragoza (orcid)0000-0003-1732-9155 2000 655 Universidad de Zaragoza Dpto. Ciencias de la Tierra Área Paleontología zlac021 (2022), [33 pp.] Zool. j. Linn. Soc. ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 0024-4082 7039809 http://zaguan.unizar.es/record/118084/files/texto_completo.pdf Versión publicada 2842516 http://zaguan.unizar.es/record/118084/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:118084 articulos driver 2024-03-18-14:18:26 ARTICLE