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The cretaceous period!!!
First it was the Triassic period about 200-250 million yrs ago then it was the Jurassic Period and then about 135 million yrs ago the cretaceous period started and then it ended about 65 million yrs ago.
This was the period when the t-rex was alive along with ankylosaurus, velociraptor, triceratops and iguanodon.
Hope this helpsss!!!
from
Megggannn
The geologic period that began 66 million years ago and ended 23.03 million years ago is known as the Paleogene period. It is a common misconception that its predecessor, the Cretaceous period, was 65 million years ago; however, this is incorrect as the Cretaceous ended 66 million years ago.
The whole time period you mention is encompassed within the Mesozoic era. 208 million years ago is at the beginning of the Rhaetian stage, which is the last stage of the Triassic period. A stage is a section of time lasting a few million years. 200 million years ago, the Rhaetian and the Triassic ended, and the Jurassic period's first stage, the Hettangian, began. 146 million years ago is 1 million years before the end of the Tithonian stage, the last stage of the Jurassic period.
To sum it up, almost the entire timeframe is in the Jurassic period, and it encompasses all but the last 1 million years of the Jurassic, but the timeframe began 8 million years before the Jurassic during the end of the Triassic period.
That was the beginning of the Devonian peroid and the end of the Silurian period. It was that period when the first insects came to Earth.
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How long ago was the cretaous period?
The Cretaceous Period ended about 66 million years ago.
Which period lasted about 135 million to 65 million years ago?
The Cretaceous Period.
About how many year ago the mesozoic lasted?
The Mesozoic Period (251 - 65 million years ago) lasted approximately 216 million years. It consisted of the Triassic Period (251 - 200 million years ago), the Jurassic Period (199-146 million years ago) and the Cretaceous Period (145 - 65 million years ago).
What is the length in millions of years of the Tertiary period?
The answer is 63.2 million years. Since the Tertiary Period began 65 million years ago and then stoped 1.8 million years ago you have to subtract the 1.8 million from 65 million to get the actual lenght of time.
How many million years was the Cretaceous period?
144 to 65 Million Years Ago
How many millions years ago was the Cretaceous period?
The Cretaceous period occurred approximately 145 to 66 million years ago.
When did the tertiary period start and end?
The Tertiary Period began roughly 65 million years ago following the mass extinction event that ended the Cretaceous Period. It ended about 2.6 million years ago, marking the beginning of the Quaternary Period.
Did the dinosaurs die in the triassic period?
Dinosaurs originated in Triassic period 230 million years ago and went extinct in the Cretaceous period i.e. 65 million years ago.
When did dinosaurs roam the earth?
They dominated the Earth for over 160 million years, from the late Triassic period (about 230 million years ago) until the end of the Cretaceous period (65 million years ago).
How many years ago did Pterosaurs fly?
The pterosaurs flew during a time period staring about 220 million years ago and ending 65 million years ago.
When were dinosaurs here?
The dinosaurs came onto earth approximately 245 million years ago. They became extinct about 65 million years ago.
What year the dinosaurs got exstinc?
Dinosaurs are believed to have gone extinct approx. 66 million years ago
