Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emergence of complex, multicelled life-forms ...

This tiny fossil, measuring just a few centimeters, is significant as it is the oldest confirmed ecdysozoan and the only one known from the Precambrian era. Lead researcher Ian Hughes, a Ph.D. can ...

The Precambrian eon is vast, almost unimaginably so. In fact, before some fossil discoveries were made late in the 20th century, it was considered unknowable -- evolution's dark ages. The ...