Chip Chick on MSN3mon
The Rise Of The Dinosaurs 200 Million Years Ago Was Caused By Volcanic Winters, Not Warmth
One of the five greatest mass extinctions took place on Earth about 201.6 million years ago, when three-quarters of all ...
Live Science on MSN5mon
Mesmerizing animation shows Earth's tectonic plates moving from 1.8 billion years ago to today
Related: Weird mystery waves that baffle scientists may be 'everywhere' inside Earth's mantle Around 200 million years ago ...
Forbes9mon
Earth Is Suddenly Slowing And Days Now Last Longer, Scientists Say
In about 200 million years, the length of a day on Earth should reach 25 hours ... rocks suggested that about 1 or 2 billion years ago, the length of a day stalled at 19 hours for around a ...
NDTV29d
Scientists Say Earth's Mantle Is Split Into Two Halves. Here's Why
One of Earth's regions, known as the African domain ... which formed around 335 million years ago and began breaking up 200 million years ago. "What we observe today is essentially the result ...
230 Million-Year-Old Fossil From Wyoming Challenges Dinosaur Origin Theories
A chicken-sized dino, the oldest known in North America, has thrown a wrench in the widely accepted timeline of early dinosaur history.
National Geographic news3mon
Precambrian Time
About 800 million years ago, oxygen levels reached about 21 percent and began to breathe life into more complex organisms. The oxygen-rich ozone layer was also established, shielding the Earth's ...
The Victoria Advocate18d
Dinosaurs roamed North America millions of years earlier than thought
How and when dinosaurs first emerged and spread across Earth more than 200 million years ago has been a source of debate among paleontologists for several years. The mainstream view has held that ...