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Jonna Pierre
Jonna Pierre
Pangaea formed about 300 million years ago and began to rift about 200 million years ago.The formation and falling apart of super continents appears to be cyclical. Pangaea is the fourth super continent in Earth's history.Known super continents:Columbia (2 billion years to 1.8 billion years ago)Rodinia (1.1 billion years ago to 750 million years ago)Pannotia (600 million years ago to 540 million years ago)Pangea (300 million years ago to 200 million years ago)
Pangaea (or Pangea) was on Earth from about 300 million years ago to 180 million years ago.
The Carboniferous is considered to have started 354 million years ago and ended 290 million years ago.
Permian Period was from 299 million years ago to 250 million years ago
The Phanerozoic Eon was from 542 million years ago until Now.The Proterozoic Eno was from 2,500 to 542 million years ago.
For about 165 million years.
160-165 million years ago
the Appalachian mountains were formed about 165 million years ago
Dinosaurs first appeared about 230 millions years ago and they went extinct about 65 million years ago. Therefore the time of the dinosaurs was about 165 million years.
Dinosaurs existed from 231 million to 65 million years ago. So, yes, dinosaurs existed for 166 million years.
There was no years 85 million years ago. Man made up the idea of years, dates, or time. The dinosaur existed 65 million years ago.