This is the 15322nd most frequent Korean word.
백악기
"Cretaceous period."
Historical geological period reference.
백악기는 중생대의 마지막 시기였습니다.
The Cretaceous period was the last epoch of the Mesozoic era.
Time period associated with paleontology.
공룡들의 화석은 백악기에서 발견되었습니다.
The fossils of dinosaurs were found from the Cretaceous period.
Environmental description pertaining to specific geological epoch.