Extinction & Seed Plants

300–230 million years ago (PermianLate Triassic)

What was the Earth like during this time?

What plants were dominant during this time?

What did the earliest seed plants look like?

Above: leaf of an early seed fern, Neuropteris

What plant groups were present during the Permian 

Above: Fossil and reconstructions of Glossopteris

Above: Living and fossil cycads

Above: Fossil and reconstructions of Voltziales

What is extinction?

What was the largest extinction event on Earth?

Why was the end of the Permian so severe?

What plants survive the Permian, and appear in the Triassic?

Above: Fossil and reconstructions of corystosperms

What plants survive after this time?

What was the Earth like before this time?