Scientists discovered remains of the earliest animals on Earth. They may have made a big mistake.

They looked like traces left behind by tiny creatures, but were most likely microbes.

Discovery of new fossils in Northwest Canada changes view of early animal evolution

Researchers have uncovered a remarkable fossil site in a remote part of Canada's Northwest Territories, offering ...
Live Science on MSN

Complex animals evolved up to 10 million years earlier than previously thought, fossils reveal

Trove of fossils discovered in Canada sheds light on "when life first became large, complex and unmistakenly animal." ...
AZ Animals

The Gentle Giant That Science Discovered and Destroyed in Three Decades

We tell the tragic story of Steller's sea cow - a marine animal that went extinct just 27 years after it was first discovered.
AOL

Ancient Sponge Discovery Could Change the Story of Earth’s First Animals

Ancient animal history is extremely difficult to reconstruct, for a number of reasons. Some of the earliest creatures in existence were soft-bodied and microscopic, leaving behind very little evidence ...
Scientific American

These bizarre fossils represent some of the earliest moving, sexually reproducing life ever discovered

But more than half a billion years ago this wilderness was an ancient seafloor home to the wrinkled pancakes, fleshy fronds ...
EurekAlert!

Discovery of new marine sponges supports hypothesis on animal evolution

A completely new order of marine sponges has been found by researchers at the Museum of Evolution, Uppsala University. The sponge order, named Vilesida, produces substances that could be used in drug ...