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This photo provided by the Korea Dinosaur Research Center at Chonnam National University on Feb. 25, 2023, shows one of the four fossilized eggs of different dinosaurs that were discovered in the southwestern couty of Sinan on Feb. 19. (Yonhap)
This photo courtesy of the National Research Institute of Cultural Heritage (NRICH) shows the footprints of a vertebrate presumed to belong to the Cretaceous Period of the Mesozoic Era, commonly known as the age of dinosaurs about 100 million years ago. The footprints were found on a rock in the southeastern industrial city of Ulsan recently. The NRICH said on June 5, 2018, that 18 such footprints were found in Ulsan on June 1. (Yonhap)