RT Journal Article T1 On Segurasaurus (Squamata: Pythonomorpha), a New Genus of Lizard from the Cenomanian (Upper Cretaceous) of Portugal A1 Berrocal Casero, Melani A1 Pimentel, Ricardo J. A1 Callapez, Pedro Miguel A1 Barroso Barcenilla, Fernando A1 Ozkaya de Juanas, Senay Amalia AB Carentonosaurus soaresi was recently described in the uppermost middle Cenomanian (Upper Cretaceous) of Casais dos Carecos (Coimbra, western Portugal) based on a diverse set of new material (cervical and dorsal vertebrae) of the Pythonomorpha lizard. The main morphological characteristics observed in the vertebrae used for the diagnosis of this species are the presence of distinct lateral and subcentral foramina, highly laterally projected paradiapophyses beyond the prezygapophyses, a low subrectangular neural spine ornamented with longitudinal grooves, and dorsal vertebrae displaying a sagittal furrow along the ventral surface. Additional diagnostic details observed both in new material and the previously studied vertebrae are described herein, such as the presence of keels in the zygantrum and zygosphene. These and other important morphological characteristics present in the species soaresi are absent in the genotype Carentonosaurus mineaui and in other known Squamata, allowing for the definition of the new genus Segurasaurus. PB MDPI YR 2024 FD 2024-03-18 LK https://hdl.handle.net/20.500.14352/103165 UL https://hdl.handle.net/20.500.14352/103165 LA eng NO Universidad Complutense de Madrid NO Foundation for Science and Technology NO Junta de Castilla y León NO Universidad de Alcalá DS Docta Complutense RD 14 abr 2025