"A Rare Example of Exceptional Fossil Preservation": Major Animal Groups Were Living On The Seafloor Millions Of Years Before The Cambrian Explosion
Favicon 
www.iflscience.com

"A Rare Example of Exceptional Fossil Preservation": Major Animal Groups Were Living On The Seafloor Millions Of Years Before The Cambrian Explosion

When a stunning event appears to come out of nowhere, the mysterious predecessors are usually out there somewhere, and now we’ve found them.