Chengjiang fossils: Early animals were preserved by sediment from a river delta

Share This Post

[ad_1]

The Cambrian animals preserved at the Chengjiang fossil site in China lived in a shallow sea close to a river delta – a changeable environment that might have driven rapid evolution



Life



28 March 2022

Left: Lobopodian worm (Luolishania) Right: Arthropod (Naroia)

Luolishania (left) and Naroia, two fossils from the Chengjiang site

Xiaoya Ma

Some of the first complex animals lived in a shallow sea near the mouth of a river delta about 518 million years ago. The changeable environment, which was prone to violent floods, may have helped drive the evolution of early animals, including some of the first worms and animals with hard shells.

The Cambrian period, from 541 to 485 million years ago, saw a great flowering of animal life, dubbed the Cambrian explosion. A number of major animal groups originated …

[ad_2]

Source link

spot_img

Related Posts

- Advertisement -spot_img