Which of the following statements concerning the Mesozoic or the post-Mesozoic world is FALSE?单项选择题

The Mesozoic was the time when the flowering plants (angiosperms) that now dominate most of the Earth’s present landmasses arose.

The Mesozoic was the time when the first land plants arose and covered the land, along with the first animals capable of digesting them.

Although mammals became larger after the End-Cretaceous mass extinction, at first crocodiles, snakes, and birds still dominated the land.

The Mesozoic was the time when the social insects that comprise so much of Earth’s present terrestrial biomass first became so numerous.

Although we often refer to the present as being the age of mammals, there are still more bird (avian dinosaur) species than mammal species.