Mesozoic Events The Piedmont: Newark Basin. The Mesozoic Era Mesozoic Era = 251 to 65.5 million years ago. Name Mesozoic means "middle life" Mesozoic.
Latest Precambrian / Early Paleozoic Supercontinent Rodinia, centered about the south pole, breaks apart. North America (Laurentia), Baltica, and Siberia.
