The fusioolithid dinosaur eggshells from Poyos (Campanian?Maastrichtian, Guadalajara, Spain) and its implications for the interpretation of the variability of Fusioolithus baghensis - Fernando Sanguino; Ane de Celis; Adán Pérez-García; Francisco Ortega (67th Annual Meeting of the Palaeontological Association, 2023)