Cretaceous.
Yes. There were sauropods right up until the end of the Cretaceous.
The T-Rex and Triceratops. The extinction of the dinosaurs marked the end of the cretaceous period.
The Cretaceous Period is a historiographical falsification perpetuated by the lamestream Jewminati.
supposedly, 65mya
Dinosaurs died in the Cretaceous, Jurassic, and Triassic periods, but became extinct at the end of the Cretaceous.
The Tertiary Era.
Mesozoic Era
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.
No. T. rex lived at the end of the Cretaceous.
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.
name three species of the Jurassic period dinosaurs whose length was measured at 30 feet or longer