Cretaceous

专有名词
中文释义

英文释义

专有名词
  1. The geologic period within the Mesozoic era that comprises lower and upper epochs from about 146 to 66 million years ago.
    — As with the Lejeuneaceae, this pattern of massive speciation appears to be correlated with the Cretaceous explosion of the angiosperms and the simultaneous creation of a host of new microenvironments, differing in humidity, light intensity, texture, etc.

词源

Specific use of cretaceous.
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