Recently unearthed fossils from the Cambrian period shed light on a key stage of evolution, when life became much more ...

ImagesA fossil specimen misidentified since its discovery during the Civil War and correctly identified by a University of Michigan researcher reveals ...

A treasure trove of exceptionally preserved early animals from more than half a billion years ago has been discovered in the ...

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.

A stunning new fossil find from the Grand Canyon fills in some blanks from a time when evolution began experimenting with weird new forms.

A treasure trove of exceptionally preserved early animals from more than half a billion years ago has been discovered in the Grand Canyon, one of the ...

Researchers have discovered that the nervous system of this ancient marine arthropod surprisingly resembles that of modern arachnids.

Spiders and scorpions have ruled as terrestrial predators for 400 million years, with their success often attributed to ...

The tiny 'backward' brain of an ancient sea creature hints that spider ancestors might have gotten their start in the ocean.

Finely preserved brain features in a tiny marine arthropod fossil suggest that arachnids – spiders and their close kin – may ...