Coimbra, Rute Moreno-Azanza, Miguel Ezquerro, Lope Núñez-Lahuerta, Carmen Gasca, José Manuel Immenhauser, Adrián Mateus, Octávio Rocha, Fernando Evaluating and comparing geochemical sampling protocols in dinosaur eggshells: refining Cretaceous ecosystem research Cretac. res. 10.1016/j.cretres.2023.105632 2023 2023