When I got my kids cell phones, it was at age 11. That was the age at which they started doing things without their parents around, including taking a bus by themselves. I told them they could have the phones when they turn 12, but I gave them phones at the beginning of the school year during which they would turn 12.
The Paleozoic Era. The Paleozoic Era, meaning ancient life is the first of three eras that form a part of the Phanerozoic Eon, the other two periods being the Mesozoic and the Cenozoic. The Mesozoic is the age of the Dinosaurs and the Cenozoic is the era in which we now live. The Paleozoic Era spanned a longer period of time, from approximately 542 Ma to 251 Ma. Just as the Mesozoic is divided into periods (Triassic, Jurassic, and Cretaceous), the Paleozoic Era is also divided. It contains six different periods which are:
The Mesozoic Era is also known as the Age of Reptiles or the Age of Dinosaurs. During the era, dinosaurs were the Earth's dominant form of life. Continue Reading. The Mesozoic Era is divided into three different periods: the Triassic, the Jurassic, and the Cretaceous. It spanned from approximately 245 million years ago to 65 million years ago.The Mesozoic Era was followed by the Cenozoic Era, which is the current era. The Mesozoic Era ended with the extinction of the dinosaurs.