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Is it true that the first dinosaurs appeared in the triassic period?
Wiki User
∙ 10y ago
Yes, the first dinosaurs evolved in the Triassic period. The earliest dinosaurs that have been discovered are Eoraptor and Herrerasaurus, which lived 231.4 million years ago.
Wiki User
∙ 10y ago
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When was the first dinosaur?
Dinosaurs appeared, probably with Eosaurus, in the mid Triassic period
How did the triassic-jurassic extinction event create diversification in dinosaurs?
Dinosaurs first appeared in the middle of the Triassic period. The extinction during the Triassic-Jurassic periods allowed dinosaurs to grow to mammoth proportions.
In what period did dinosaurs first live?
Triassic
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.
Did dinosaurs roam the lands during the pennsylvanian period?
No. the first Dinosaurs were in the Triassic period, which came later
Were there dinosaurs in the Permian Period?
Yes. Non-avian dinosaurs first appeared in the Triassic period and were around until the end of the Cretaceous period. Birds, which are now classified as dinosaurs, appeared in the late Jurassic and live through the Cretaceous period as well.
Was 250 million years before Dinosaurs?
yes the first dinos appeared 230mya during the late triassic period
Where there mammals during the dinosaur age?
Yes. The first mammals appeared only about ten million years after the first dinosaurs in the Triassic period.
When did the turasic period end?
The Triassic Period ended 201.3 million years ago. It was the period in which the first dinosaurs evolved. The Triassic was followed by the Jurassic period.
Did the mammals live before or after the dinosaurs?
The first mammals appeared in the Triassic Period of the Mesozoic Era, when dinosaurs had already been present for at least 9 million years.
When did the first dinosaurs and mammals evolve?
The first dinosaurs AND the first mammals both appeared in the Triassic period From the Mesozoic era.
What period did the first dinosaur's appear in?
The earliest reptiles known evolved around 312 million years ago, and looked a lot like lizards. However, they were not actually lizards. The oldest known lizard fossil dates to 220 million years ago, about the same time that dinosaurs evolved. That was during the Triassic period of the Mesozoic era.
