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None. The first dinosaurs did not evolve until around 230 million years ago. The first reptiles appeared just before 300 million years ago. These animals would have looked rather like lizards though they are not represented by any modern group of animals.
Wiki User
∙ 8y ago
Wiki User
∙ 10y agoNo, dinosaurs did not exist until 231.4 million years ago. No animals or plants existed 3 billion years ago. All life forms at that time were single celled organisms.
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What types of animals lived in the lowland forests 65 million years ago?
The archosaurians that include the alligators, birds and thecodonts, crocodiles, dinosaurs, and pterosaurians are the low land animals that lived 245 to 65 million years ago. The population was dominated by dinosaurs.
What period do dinosaurs dominated the land?
Dinosaurs dominated the land from 200 Million Years Ago to about 66-66 Million Years Ago.
What kind dinosaur lived in Florida?
well florida was submerged under water so what was found was prehistoric sharks and sea urchins.
When did dinosaurs first walk on earth?
Dinosaurs evolved on land and never lived in aquatic habitats. They existed between 225 and 65.5 million years ago, with the exception of birds, a group of dinosaurs that thrives to this day.
Where dinosaurs lived?
Dinosaur lived in pretty much anywhere in the world some migrated to other parts of the world
Were there a lot of dinosaurs?
Yes, they were the dominant land animals for over a hundred million years. In that time there would have been trillions of individuals, easily ten thousand dinosaurs for every human who ever lived.
Why did dinosaurs did not last very long?
Excluding birds (a subgroup of dinosaurs), they lived for 166 million years, which is a long time for an animal group. Including birds, they have been around for 231.4 million years so far, and will probably continue to exist as long as there is vertebrate life on land.
Did sharks exist million years ago?
Yes. Sharks have been around for more than 400 million years.
Did dinosaurs rule before mammals ruled?
Yes. Dinosaurs were the dominant land vertebrates from about 200 million years ago to about 65 million years ago (A bit longer if you count a few million years when birds where dominant). Mammals then took over some time after non-avian dinosaurs went extinct.
How many types dinosaurs lived under the water?
there were no types of water dinosaurs. Diosaurs only lived on land.
What is the first land vertebrate?
Dinosaurs ---- Dinosaurs first appeared in the last part of the Triassic period, about 230 million years ago. That was during one of the lowest ebbs of atmospheric oxygen content of the last 500 million years.
What period were dinosaurs from?
None-avian dinosaurs first appeared in the Triassic period and were the dominant land vertebrates through the Jurassic and Cretaceous periods. At the end of the Cretaceous period, 65.5 million years ago, all non-avian dinosaurs went extinct. Birds, which are now classified as dinosaurs, continue to live to his day.
