the Cretaceous
noun/ðə krɪˈteɪʃəs/
/ðə krɪˈteɪʃəs/
[singular] (geology)- the period between around 146 to 65 million years ago, when dinosaurs lived (until they died out)Topics Historyc2
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the Cretaceous
Definition of the Cretaceous noun from the Oxford Advanced Learner's Dictionary