Elongatoolithus chimeiensis

† Elongatoolithus chimeiensis is an oospecies of Late Cretaceous oviraptorosaurian eggs from Chimei, China. These elongated eggs, laid in circular clutches of 20–30 eggs, were incubated in partially open nests, allowing the brooding parent to sit centrally above them. Eggshell microstructure analysis reveals a characteristic prismatic layer with branching pore canals. The chimeiensis oospecies is distinguished from congeners by specific dimensional ratios and eggshell thickness measurements.