2026-04-13T15:05:17Zhttps://recercat.cat/oai/request
oai:recercat.cat:2072/4584132024-11-01T00:56:16Zcom_2072_98col_2072_378192
RECERCAT author Čerňanský, Andrej author Stanley, Edward L. author Daza, Juan D. author Bolet, Arnau author Salvador Arias, J. author Bauer, Aaron M.. author Vidal-García, Marta author Bevitt, Joseph J. author Peretti, Adolf author Aung, Nyi Nyi author Evans, Susan E. 2024-11-01T00:56:16Z 2024-11-01T00:56:16Z 2022 http://hdl.handle.net/2072/458413 We here report on a well-preserved juvenile lizard specimen in Albian amber (ca. 110 mya) from the Hkamti site (Myanmar). This new taxon is represented by an articulated skull and the anterior portion of the trunk, including the pectoral girdle and forelimbs. The scleral ossicles and eyelid are also visible, and the specimen exhibits pristine detail of the integument (of both head and body). In a combined molecular and morphological analysis, it was consistently recovered as a scincoid lizard (Scinciformata), as sister to Tepexisaurus + Xantusiidae. However, the phylogenetic position of the new taxon should be interpreted with caution as the holotype is an immature individual. We explored the possibility of miscoding ontogenetically variable characters by running alternative analyses in which these characters were scored as missing data for our taxon. With the exception of one tree, in which it was sister to Amphisbaenia, the specimen was recovered as a Pan-xantusiid. Moreover, we cannot rule out the possibility that it represents a separate lineage of uncertain phylogenetic position, as it is the case for many Jurassic and Cretaceous taxa. Nonetheless, this fossil offers a rare opportunity to glimpse the external appearance of one group of lizards during the Early Cretaceous. open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by/4.0/ A new Early Cretaceous lizard in Myanmar amber with exceptionally preserved integument Article