The first true insects show up in the early Devonian. By the late Devonian, terrestrial vertebrates. Carboniferous and Permian Extensive plant communities, mainly swamp that become huge coal deposits across the world. Winged insects arise. Amphibians are up in the Carboniferous, but drop in the Permian.
Complete metamorphosis evolves in insects.
First amniotes appear and develop mammal-like traits. Pangaea Another huge extinction, the largest so far with loss of lots of marine invertebrates. Pangaea breaks up during the Triassic. Marine groups hammered in Permian extinction begin to diversify. Angiosperms maybe arise late in the Triassic, but are certainly on the scene in the early Cretaceous.