Dinosaurs died in the Cretaceous, Jurassic, and Triassic periods, but became extinct at the end of the Cretaceous.
1st mammals & dinosaurs
No, not all at once. Throughout the 150 million year "reign" of the dinosaurs, all kinds of groups of dinosaurs have flourished then died out. Dinosaurs living in the Triassic Period were not the same as dinosaurs living in the Cretaceous period. However, the final blow to the dinosaurs that caused them all to die out was the K-T mass extinction that occurred 65 million years ago.
Non avian dinosaurs appeared during the Carnian stage of the Triassic period about 220 million years ago. They diversified in the Jurassic and even more in the Cretaceous, but they died out 65.5 million years ago. All non avian dinosaurs lived during the Mesozoic era, but birds, which are a group of dinosaurs, continue to exist today.
Some dangerous dinosaurs that lived during the Jurassic period include Allosaurus, a large predatory theropod dinosaur, as well as Ceratosaurus, Dilophosaurus, and Torvosaurus. These dinosaurs were apex predators and hunted other animals for food.
Triassic
They did not disappear but instead they died and it might be because event was caused by climate and geological changes that interrupted the dinosaurs' food supply.
The Triassic Period is a geological time period that occurred from about 251 to 201 million years ago. It followed the Permian Period and preceded the Jurassic Period in the Mesozoic Era. The Triassic Period saw the diversification of early reptiles and the rise of dinosaurs.
Cretaceous.
most dinosaurs died of the meteor but a couple of periods before the cretacious period there was the permian period in which 95% of all life died as all the volcanoes erupted and shot up gas (methane) and killed them. a crocodile/ aligator is a dinosaur, 1 of the remaining dinosaurs alive as all did not die.
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.
Plants evolved before dinosaurs, and dinosaurs depended on plants for food. The closest there came to "no plants" during the time of the dinosaurs was the mass extinction at the end, when plants died but left seeds behind that germinated when the dust thrown into the atmosphere by an asteroid impact settled and sunlight reached the surface. During that period of months or a few years without live plants, dinosaurs starved and died out.
All the dinosaurs died off in the creatacious period ( by natural disasters) Including the raptor. ^_^
Most of them died by the Cretaceous period. Those that survived evolved into some of the creatures we see today.
Parasaurolophus died off at the end of the Cretaceous period along with all the other dinosaurs.
The dinosaurs died out different way The dinosaur from the late triassic died out by the envirmont changing Dinosaur from the Jurassic died out by a flood Dinosaurs from the cretaceous died out from lava and a comet.
Both dinosaurs and mammals evolved in the Triassic Period of the Mesozoic Era.The earliest known dinosaurs are dated back to 230 million years ago.Mammals were thought to have evolved about 30 million years later, about 200 million years ago.
Dinosaurs and ammonoids appeared in the Triassic period.