Oct
6
Lauren on October 6th, 2008
The fossilized trail of an aquatic creature suggests that animals walked using legs at least 30 million years earlier than had been thought. The tracks — two parallel rows of small dots, each about 2 millimeters in diameter — date back some 570 million years, to the Ediacaran period.
The Ediacaran preceded the Cambrian period, [...]
May
9
kittymowmow on May 9th, 2008
An event as simple as the world’s first bite may have sparked an ancient “explosion” of life 500 million years ago that led to the rise of the broad groups of animals that are still alive today.
The cause of what is known as the “Cambrian Explosion” — which occurred during the Cambrian Period 542 million [...]
