Cretaceous period
中文翻译
常见例句
fish thought to have been extinct since the Cretaceous period but found in 1938 off the coast of Africa
A series of beds of clay and marl in the South of England, between the upper and lower greensand of the Cretaceous period.
They have not been found later than the Cretaceous period.
early Cretaceous period
The genus is characteristic of the Cretaceous period.