Carboniferous Period
(359.2 - 299 MYA)Results 1 - 2 of 2
The History of Air
Paleontologists are looking to the fossil record to decipher what the earth's atmosphere was like hundreds of millions of years ago
April 19, 2010 |
By Brian Switek
The World's Largest Fossil Wilderness
An Illinois coal mine holds a snapshot of life on earth 300 million years ago, when a massive earthquake "froze" a swamp in time
July 2009 |
By Guy Gugliotta
