How to use in-sentence of “cretaceous period”:
+ The end of the Cretaceous period is marked by the huge extinction event which marked the end of the dinosaurs.
+ The Cretaceous period is the ninth and longest period in the Phanerozoic eon, lasting 80 million years from 145 to 65 million years ago.
+ The association between beetles and angiosperms during the Lower Cretaceous period led to parallel radiations of angiosperms and insects into the late Cretaceous.
+ The carbonate deposits were laid down during the Cretaceous Period in what was then the Western Interior Seaway.
+ Iguanodon is a genus of ornithopod dinosaur from the Lower Cretaceous period in Europe, North America, Africa and Asia.
+ Phylogenetic analysis suggests that ants arose in the Lower Cretaceous period about 110 to 130million years ago, or even earlier.
