1, Triassic
From 250 million BC to 200 million BC, it was located between Permian and Jurassic, which was the first period of Mesozoic. The beginning and end of Triassic was marked by an extinction event.
2. Jurassic
Bound between Triassic and Cretaceous, it is about 65.438+99.6 million years BC (with an error of 600,000 years) to 65.438+45.5 million years BC (with an error of 4 million years). Jurassic is the second period of Mesozoic, which began with the Triassic-Jurassic extinction event.
3. Cretaceous
Geological age The last period of Mesozoic began 65.438+0.45 billion years ago and ended 66 million years ago, lasting 79 million years. This is the longest stage of Phanerozoic.
Extended data
Dinosaur life habits: Sharp teeth and claws are hunting weapons for carnivorous dinosaurs. Tyrannosaurus rex would look for individual herbivorous dinosaurs, so they often acted alone. Some dinosaurs will move in groups, lock their prey and flock to it, and cut the abdomen of their prey with the claws of their second toe.
Herbivorous dinosaurs generally have some special "equipment" to deal with the attack of carnivorous dinosaurs. These devices are sometimes tough leather armor, bone sticks or nails, and sometimes powerful tails. Like a cudgel dragon. Large herbivorous dinosaurs will act collectively, and once threatened, they will collectively hold their ground and fight back.
Baidu encyclopedia-dinosaur
Baidu encyclopedia-Cretaceous
Baidu encyclopedia-Jurassic
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