a bevy of beasts

About 451,000,000 years ago, there was a sudden increase in the number of different types of animals in the fossil record. The animals that came before didn’t stand a chance. The new kids had hard shells, eyes, jaws and teeth. Join us for a chat about the Cambrian period.

Here’s an article that links oxygen levels to the Cambrian and Cambrian explosion.

Possible links between extreme oxygen perturbations and the Cambrian radiation of animals

Here’s an article that shares theories assuming a cold start to the Cambrian.

Diversity of Life Snowballed When Ancient Earth Was Frozen Solid

Here’s an article that shares evidence supporting a very warm start to the Cambrian.

An early Cambrian greenhouse climate