Elongatoolithus elongatus

† Elongatoolithus elongatus is the type oospecies of Elongatoolithus, a Late Cretaceous oviraptorosaurian egg from China. As the nominotypical species of the genus, it establishes the morphological standard for the elongatoolithid egg form. These highly elongated eggs, up to 18 cm long with a length-to-width ratio exceeding 2.5, represent the characteristic form of oviraptorid clutches. They are among the most commonly collected fossil eggs in Cretaceous red-bed sequences of southern China.