About the SA Blog Network

Posts Tagged "cambrian"

The Artful Amoeba

What on Earth Made These Perfect Fossil Rings?

rings_wisconsin_Hughes Lab, UC Riverside_200

See these annular structures? They are 492 million years old and come from Wisconsin. Here are some more. Was there a severe shortage of beer coasters in Cambrian Wisconsin? We’ve seen a lot of interesting fossils around the blog lately (see here, for instance, for some strange fossils that are four times as old as [...]

Keep reading »
The Artful Amoeba

Two-Billion-Year-Old Fossils Reveal Strange and Puzzling Forms


To a human, two billion years is an unfathomable interval. But that, a team of European, Gabonese, and American scientists now say, is how long ago a recently discovered hoard of fossils suggests Earth’s first big life evolved — large enough to see with the naked eye, and in a spectrum of forms that tease [...]

Keep reading »

Largest Assemblage of Cambrian Fossils Since 1909 Discovered in British Columbia

new arthropod

Much of what we know about the diversification of body plans that happened starting 540-million years ago (commonly known as the Cambrian Explosion) comes from the famous Burgess Shale formation. The original site, located in Yoho National Park in the Canadian Rockies, was discovered by paleontologist Charles Walcott in 1909. The site has produced an [...]

Keep reading »

More from Scientific American

Email this Article