neither a four corals (tetracorals) or trilobites, graptolites or not crossed that invisible boundary that lie between the paleozoic and mesozoic. mesozoic world was much more diverse paleozoic fauna and flora were in it in the new line-up considerably.

Make this proper case
Neither a four corals (tetracorals) or trilobites, graptolites or not crossed that invisible boundary that lie between the Paleozoic and Mesozoic. Mesozoic world was much more diverse Paleozoic fauna and flora were in it in the new line-up considerably.