About twenty dinosaur eggs were found as nests in the northwestern part of Jaeun Island, Sinan (Shinan)-gun, Jeollanam-do of South Korea. The dinosaur eggs, consisting at least four clutches, were discovered at the reddish mudstone intercalated in the...
About twenty dinosaur eggs were found as nests in the northwestern part of Jaeun Island, Sinan (Shinan)-gun, Jeollanam-do of South Korea. The dinosaur eggs, consisting at least four clutches, were discovered at the reddish mudstone intercalated in the Jaeundo Tuff. These dinosaur eggs have subspherical shape with about 10 cm long axis, and they were identified as faveoloolithid Propagoolithus oosp., based on a multicanaliculate pore canal system that gradually decreases in diameter towards the outer surface of the eggshell. The most well-preserved nest contains ten eggs, displaying a bowl-shaped arrangement. This type of nest suggests that titanosaurid sauropods likely excavated the ground using their hind feet to make these nests. In addition, the big holes in the dinosaur egg’s upper part (interpreted as a hatching window) with the eggshell fragments on the bottom inside the eggs suggest that these eggs were fossilized after hatching. They are expected to provide information on the diversity of dinosaurs in Korea during the Cretaceous period and their reproductive behaviors and nesting habits should be studied in more detail.