Mass extinctions are extremely catastrophic events on Earth. Throughout Earth's evolutionary history, numerous mass ...
Contributed by Kea Giles, Managing Editor, GeologyBoulder, Colo., USA: Mass extinctions are extremely catastrophic events on Earth. Throughout Earth's ...
Learn how geological clues preserved in ancient oceans link repeated volcanic eruptions to Triassic marine extinctions.
Just over half a billion years ago, Earth was rocked by a global mass extinction event, a dramatic interruption of the ...
Add Yahoo as a preferred source to see more of our stories on Google. Sharks might be the all time bullet-dodging champions. They’ve been around for about 450 million years, longer than trees, longer ...
Around 540 million years ago, Earth's biosphere underwent a pivotal transformation, shifting from a microbe-dominated world to one teeming with animal ...
One of Earth’s earliest mass extinctions wiped out most ocean life during a sudden global ice age. From the ruins, jawed vertebrates survived, diversified, and transformed the course of evolution.