Cretaceous

Từ điển LongMan Dictionary

Cre‧ta‧ceous/krəˈteɪʃəs, krɪˈteɪʃəs/ adjective
[date : 1600-1700; Language : Latin; Origin : cretaceus, from creta 'chalk']
the Cretaceous period was the time long ago when rocks containing chalk were formed

adjective
COLLOCATIONS FROM CORPUS
NOUN
period
▪ Seeds of Acer are rare compared with the leaves, which can be found in rocks dating back to the Cretaceous period.
▪ Then followed the long afternoon of the dinosaurs, the 71 million years of the Cretaceous period.
▪ The Cretaceous period in geology did not appear at a given stage in the development of the changes.
EXAMPLES FROM CORPUS
▪ Anomalous ammonites: the Cretaceous genus Nipponites.
▪ Carboniferous sediments have been affected by low-amplitude Hercynian folding, Mesozoic rift faulting and Cretaceous inversion-related compression and fault re-activation.
▪ He says that dinosaur specimens from late Cretaceous rocks reveal low predator/prey ratios of from 3 to 5 percent.
▪ Many layers of decaying organic matter built up in Pennsylvania during the Cretaceous, and now it is all coal.
▪ One possible case of paired impacts has been widely discussed in connection with the Cretaceous extinction event.
▪ Similarly, the huge reptiles which dominated the land, sea, and even the air of the Cretaceous are all gone.
▪ Their fossils are commonest in Triassic, Jurassic and Cretaceous rocks.
▪ Then followed the long afternoon of the dinosaurs, the 71 million years of the Cretaceous period.

• Từ đồng nghĩa / Synonyms:
  Cretaceous, Cretaceous period