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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.
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Which period gave rise to the climax of dinosaurs and ammonoids?
Dinosaurs and ammonoids appeared in the Triassic period.
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
Which geologic period gave rise to the climax of dinosaurs and ammonoids?
Dinosaurs and ammonoids appeared in the Triassic period.
What period is before the quaternary?
the period is teritary the period after 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
What kind of dinosaurs were there in the cretaceous period?
The T-Rex and Triceratops. The extinction of the dinosaurs marked the end of the cretaceous period.
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.
The late period of the age of dinosaurs is called what?
The cretaceous period.
The late period of the age of the dinosaurs is called what?
The Cretaceous period.
Are bears considered to be dinosaurs?
No. Bears came well after the period of the dinosaurs. Bears never existed when the dinosaurs were around.
What dominated the Mesozoic period?
The Dinosaurs Did!
What was the last period that dinosaurs lived on earth?
The last non avian dinosaurs lived up until the end of the Cretaceous period, specifically the Maastrichtian stage.However research in the past 20 years has show that birds are in fact dinosaurs that survive to this day.
