Complex sentence: During this time, marine life (including ammonites and bivalves) flourished and new types of dinosaurs evolved on land (including Cetiosaurs, brachiosaurs, megalosaurs and hypsilophodonts).
Split into simpler sentences: During this time, marine life (including ammonites and bivalves) flourished. New types of dinosaurs evolved on land (including Cetiosaurs, brachiosaurs, megalosaurs and hypsilophodonts).