Choose the mass extinction of most interest to you. cretaceous-tertiary end triassic permian-triassic late devonian ordovician-silurian you'll create a graphic representation of the three stages of one of the mass extinctions, as shown in the following table. upload your presentation in the box below. here you'll draw, paint, or paste pictures of the organisms that lived before the extinction. include marine life and life on land, including plants and animals. here you'll show what scientists think caused the mass extinction. if there are multiple theories, illustrate the one that you think is best. show what life was like after the extinction. what plants and animals survived? did new organisms appear? before event during event after event