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They evolved in the Triassic and mainly spreadout to dominate the Erath in the Jurassic most people will say this is the golden age of the dinosaurs, however I'd say the early-mid creataceous is, it's when all the weird species came

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14y ago
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11y ago

Dinosaurs lived in the Mesozoic Era, an interval of prehistoric time that lasted from about 250 million years to 65 million years ago. That era was divided into three time periods, the Triassic Period, Jurassic Period, and Cretaceous Period.

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13y ago

The Mesozoic Era in the Triassic Period.

Dinosaurs first appeared during the Triassic Period (250-230 million years ago) and were on the Earth through the Jurassic Period (200-145 million years ago) until the end of the Cretaceous Period (65 million years ago). This whole era is called the Mezozoic Era (250-65 million years ago). Dinosaurs are classified as a diverse range of reptiles, but the first true dinosaur evolved from Archosaurs (Ruling Lizards).

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13y ago

All non avian dinosaurs lived in the Mesozoic era. The Mesozoic was divided into three periods, the Triassic, Jurassic, and Cretaceous. Even to the present day, however, there are birds, which are a group of dinosaurs.

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13y ago

dinosaurs are diverse group of reptiles. they were the dominant terrestrial vertebra-ted for over 160 million years from the late Triassic period until the end of the Cretaceous period that is from about 250 million years ago to about 65 million years ago

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9y ago

From the trassic period to the cretaceous period (about 225 years ago to 65 years ago)

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11y ago

Three periods...the Triassic (late), the Jurassic, and the Cretaceous.

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12y ago

before any generation

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Q: When is the time period when dinosaurs existed?
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What dinosaur does the scorpion come from?

None. The scorpion is an arthropod, and they existed long before the dinosaurs. Scorpions are anthorpods , they did not evolved from dinosaurs. They existed long before dinosaurs evolved. Its believed that scorpions existed in the Carboniferous Period (430 million years ago). Dinosaurs existed from the Triassic Period (230 million years ago) to the Cretaceous Period (65 million years ago).


Are bears considered to be dinosaurs?

No. Bears came well after the period of the dinosaurs. Bears never existed when the dinosaurs were around.


Could Nessie be the last remaining dinosaur?

Technically, no. If the Loch Ness Monster does in fact exist, it is believed to be a plesiosaur. These were carnivorous aquatic reptiles. While they existed from the late Triassic period until the end of the Cretaceous period, a time when dinosaurs also existed, plesiosaurs were not dinosaurs.


Did bunnies live during the time that dinosaurs existed?

No, Bunnies did not live during the time of the dinosaurs


Were there worms in the time of the dinosaurs?

Yes. Worms existed long before dinosaurs did.


When triceratops was on earth what was the period time?

Triceratops existed between 68 and 65.5 million years ago. That was at the very end of the Cretaceous time period. The Cretaceous period was the last period of the Mesozoic, or Age of Dinosaurs. This means that Triceratops were one of the very last dinosaurs to exist, and were wiped out by the K-T extinction event that wiped out all of the world's dinosaurs.


Did wolves eat dinosaurs?

Wolves and dinosaurs have never existed at the same time of history.


What is the middle period of the age of dinosaurs?

The earliest period that dinosaurs existed was the Triassic period, some 225 million years ago. These were not the huge dinosaurs of the later period. Most dinosaurs of that age were small creatures that ate meat and walked on hind legs. Shaaron


What era did dinosaurs roam?

Dinosaurs existed from 230 to 65.5 million years ago. That was from the mid Triassic period to the end of the Cretaceous period. All three periods were in the Mesozoic era.


What time sea dinosaurs existed and what they used to eat?

177,000,000 years ago ate other sea dinosaurs


During what time period were dinosaurs at their peak?

the best time of dinosaurs was the jurassic period where big sauropods ruled the earth ,late in the cretaceous period some species of dinosaurs were in decline before the hit of the meteorite that killed all dinosaurs


Is the Jurassic period a geologic time that followed the mass extinction of dinosaurs?

No. The Jurassic was in the middle of the dinosaurs' reign on Earth. The time period after the extinction of the dinosaurs is referred to as the Paleogene or the Tertiary.