Fossils from some of the oldest-known animals on Earth, dating from 574 million years ago (Ediacaran period), suggest that cloning, not competition, dominated the Ediacaran seas, slowing evolution until environmental stress helped drive the rise of sexual reproduction and a burst of biodiversity.

The post Earth’s Earliest Animals May Have Thrived Too Easily to Evolve appeared first on Sci.News: Breaking Science News.

Tiny colonial animals called bryozoans were long thought to have appeared tens of millions of years after the Cambrian explosion.

The post Complex Colonial Life Was Already Thriving during Cambrian Explosion appeared first on Sci.News: Breaking Science News.

A new species of corcoraniid arthropod that lived during the Furongian epoch, between 497 and 487 million years ago, has been identified from an exceptionally preserved specimen found near Québec, Canada.

The post 490-Million-Year-Old Arthropod Fossil Fills Puzzling Gap in Fossil Record appeared first on Sci.News: Breaking Science News.