Cretaceous
01
백악기, 백악기 시대
from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
cretaceous
01
백악기의
relating to the period between approximately 146 and 65 million years ago, when dinosaurs lived (until their extinction)
02
분필이 풍부한, 백악기의
abounding in chalk
