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The first era of our current eon, the Paleozoic Era, is probably the most deceptively fascinating time in Earth’s history. With nearconstant revolutions in life, punctuated by catastrophic extinctions, it is also one of the most chaotic.

Correction! At 9:19, we erroneously refer to Dimetrodon as an herbivore. It was definitely a carnivore. We even made a whole video about Dimetrodon and their carnivorous ways in a previous episode:    • Dimetrodon: Our Most Unlikely Ancestor   Thanks to everyone who pointed out our error!

Thanks to Studio 252mya for their illustrations. You can find more of their work here: https://252mya.com/licensing

Produced for PBS Digital Studios.

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