Geology. Belonging to or found in the Chalk formation. So cretaceous group, cretaceous series, cretaceous system. cretaceous period: the period…
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| 释义 | the world > the earth > structure of the earth > age or period > [adjective] > secondary or Mesozoic > Cretaceous (3) cretaceous1831 Geology. Belonging to or found in the Chalk formation. So cretaceous group, cretaceous series, cretaceous system. cretaceous period: the period… Subcategories:— specific (2) |
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