Learn more about a time period marked ... organisms ever to populate Earth. These familiar marine arthropods first arose about 545 million years ago in the early Cambrian and thrived throughout ...

But to find that complexity, we must take the lessons of the boring billion to heart. Planets are not just a stage on which ...

"The Grand Canyon is an epic Rosetta Stone for geology," Denver Museum of Nature and Science geologist James Hagadorn said.

Since soon after our planet formed, Earth's 4.6 billion-year-long history was dominated by single-celled life. Something ...

During the Cambrian Period (538-485 million years ago)—a ... there are more species of arthropod than any other group of ...

Armed with advanced technology, decades of expertise, and insights from an NSF-funded study, a multi-institution team of ...

Geologists studying the Cambrian rocks of the Grand Canyon have uncovered exciting new insights that challenge traditional ...

If Earth's history were a calendar year, humans would not appear until the last few minutes before midnight on Dec. 31.

A new 450-million-year-old fossil arthropod, preserved in 3D by iron pyrite (fool’s gold), has been unveiled by scientists.

The 450-million-year-old fossil of an ancient relative of spiders has been discovered preserved in 3D by fool’s gold. The new ...

Geoscientists employed current-day stratigraphic, depositional and paleontological models, along with modern technological muscle to provide updated insights of the Cambrian period of the Grand Canyon ...

They report their efforts in “The Cambrian of the Grand ... today’s devastating hurricanes – during a period of very hot temperatures when the Earth was ice-free,” she says.