More surprisingly, the amphibian fossil turned out to be 161 million years old, breaking the record for the oldest known ...
A study led by researchers at the American Museum of Natural History presents the oldest known example in the fossil record of ... as an arms race because one species' improved abilities lead ...
Two Harvard biologists have discovered fossils of an algae more than three billion years old -- the oldest fossil organism ever found: The algae seems to have carried on photosynthesis ...