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Cretaceous
? TBD
Third and last period of the Mesozoic Era
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Wikipedia

The Cretaceous (IPA: krih-TAY-shəss) is a geological period that lasted from about 143.1 to 66 Ma (million years ago). It is the third and final period of the Mesozoic Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin creta,...

Follows
Jurassic
References
Wikidata