Elongatoolithus

† Elongatoolithus is a genus of elongated oviraptorosaurian dinosaur eggs from the Late Cretaceous of Asia, among the most common fossil eggs recovered from the Gobi Desert. Their characteristically elongate shape and complex prismatic eggshell microstructure with branching pore canals distinguish them from other oospecies. Clutches of Elongatoolithus eggs are found arranged in paired rows, consistent with brooding behaviour by oviraptorids. Multiple species are distinguished based on egg size,