Cretaceous
01
白亜紀, 白亜紀の時代
from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
cretaceous
01
白亜紀の
relating to the period between approximately 146 and 65 million years ago, when dinosaurs lived (until their extinction)
02
チョークに富む, 白亜紀の
abounding in chalk
