Paleozoic era
here were changes to the land and sea. mountains were formed and the seas got deeper volcanoes formed islands. there were animals and plants too these are some of them. there were sharks, sponge. and a plant that was there was kelp and seaweed. when the era ended there was a mass extinction that killed 90% of all species.
there were changes to the land and sea. mountains were formed and the seas got deeper volcanoes formed islands. there were animals and plants too these are some of them. there were sharks, sponge. and a plant that was there was kelp and seaweed. when the era ended there was a mass extinction that killed 90% of all species.
here were changes to the land and sea. mountains were formed and the seas got deeper volcanoes formed islands. there were animals and plants too these are some of them. there were sharks, sponge. and a plant that was there was kelp and seaweed. when the era ended there was a mass extinction that killed 90% of all species.
there were changes to the land and sea. mountains were formed and the seas got deeper volcanoes formed islands. there were animals and plants too these are some of them. there were sharks, sponge. and a plant that was there was kelp and seaweed. when the era ended there was a mass extinction that killed 90% of all species.