mesozoic and cenozoic era Flashcards
when was the mesozoic era?
251-65.5 mya
what was significant about the amimal phylas in the mesozoic era?
animal from the paleozoic began to spread to new habitats
what lead to the origin of flight equipment in the mesozoic?
evolution of tetrapods
what new animals appeared in the mesozoic era?
small/large dinosaurs emerge along with first small bodied animals
which animals went through a dramatic diversification during the mesozoic?
insects due to evolution of flight
when was the cenozoic era?
65.5 mya to now
what main event occured in the cenozoic?
mass extinction of terrestrial and marine animals
which animals went extinct and which ones arose in the cenozoic?
large non flying and aquatic dinosaurs died, large mammalian herbivores and predators (small to large bodied)