Vertebrates are thought to have emerged during the Cambrian explosion around 520 million years ago ... and therefore he says it was “a little bit of a surprise” to see the fish definitively classified ...

the splendid betta fish owes its body construction to early chordates in the Cambrian such as Pikaia gracilens (the fossil shown here). Fishy yet not a fish, Pikaia possessed a flexible rod of ...

The Ediacaran-Cambrian transition ... reptiles, amphibians, and fish could also be sentient Surprising effects of human activity on the unsung heroes of biodiversity: insects With paired lateral ...

Learn more about a time period marked by an intense burst of evolution. 3 min read The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known.

All animal evolution for the last half billion years has come from tinkering with these Cambrian body plans. Then, between about 570 and 530 million years ago, another burst of diversification ...

Since its discovery in 1910, a creature from the Middle Cambrian known as Pikaia gracilens ... “It so not so much a Big Bang, going to a fully fledged fish,” Mussini told The New York Times.

A major fossil site bearing witness to the Cambrian explosion and providing ... which is considered the oldest fish ever found, proving that fish evolved earlier than preciously thought," she ...