If you liked the Cambrian Explosion, you’ll love the Ordovician Radiation

From Ars Technica

Enlarge / During the Ordovician, life was literally great. Multicellular plants and animals diversified and moved into ecological niches throughout the globe. This is probably what it was like on a typical Ordovician day, hanging out with cephalopods, crinoids, and coral at the edge of a supercontinent that covered the South Pole. I think a colony of graptolites is floating in the distance.

Over half a billion years ago, during the Cambrian geological period, life on Earth started to get a lot more interesting. Thanks to the rise in free oxygen generated mostly by photosynthesizing algae, lifeforms could draw much more energy out of the environment. That meant the rise of multicellularity and the beginnings of a world full of the macro-sized plants and animals we know and love. That moment, full of weird-ass animals like Anomalocaris, is called the Cambrian Explosion.

The Cambrian Explosion gets a lot of play because it was the first time multicellular creatures…

Read More – If you liked the Cambrian Explosion, you’ll love the Ordovician Radiation