The Cretaceous period ended as the result of a mass extinction event, probably resulting from an asteroid impact. This wiped out 65 percent of life on earth, including the ammonites, the plesiosaurs, the pterosaurs, and, most famously, the dinosaurs.
Cretaceous.
The T-Rex and Triceratops. The extinction of the dinosaurs marked the end of the cretaceous period.
supposedly, 65mya
The Cretaceous Period is a historiographical falsification perpetuated by the lamestream Jewminati.
Triceratops existed from 68 to 65.5 million years ago. That was at the end of the Maastrichtian stage, the last stage of the Cretaceous period, which was the last period of the Mesozoic. In fact, Triceratops existed at the very end of the Mesozoic era and was one of the dinosaurs wiped out by the K-T extinction.
Mesozoic Era
Dinosaurs died in the Cretaceous, Jurassic, and Triassic periods, but became extinct at the end of the Cretaceous.
Ammonites went extinct at the end of the Cretaceous Period.
No. If you count birds as dinosaurs, they still exist. If you don't, dinosaurs became extinct at the end of the Cretaceous, not the beginning.
The dinosaurs died out 65.5 million years ago. That was the very end of the Maastrichtian stage, which was the last stage of the Cretaceous time period. The Cretaceous was the last period of the Mesozoic era.
The Paleogene Period followed the Cretaceous.
The Cretaceous period followed the Jurassic period and lasted from about 145 million to 66 million years ago. In the Cretaceous period, flowering plants became more dominant, dinosaurs continued to diversify, and large marine reptiles like mosasaurs thrived. However, the end of the Cretaceous period marked by a mass extinction event where dinosaurs and many other species went extinct.