It’s already baffling how many incredible and strange creatures can be found on planet Earth, with there being well over 8 ...

The end of the Cambrian saw a series of mass extinctions during which many shell-dwelling brachiopods and other animals went extinct. The trilobites also suffered heavy losses.

First, organisms may not have sequestered ... Others propose that an extinction of life just before the Cambrian opened up ecological roles, or "adaptive space," that the new forms exploited.

dramatically. It was the time of the Cambrian Explosion, an eruption of life when Earth’s very first animals began appearing in the fossil record — the ancestors of all major animal groups ...

Another important study focused on the Ediacaran-Cambrian transition, which is pivotal for understanding the radiation of early animals. Researchers created new age models based on carbon isotope ...

While many scientists think that they subsequently evolved into new forms of animals that continued into the Cambrian period, others say that they were wiped out by extinction. 800 mya ...

The archaic sponge reef-dwellers of the Cambrian gave way to bryozoans—tiny, group-living animals that built coral ... in the second largest mass extinction of all time, wiping out at least ...