Either buy a kit, or simply follow the guidelines below. Here are the general materials you'll need: 1  8-foot (2.5-meter) long 1 Â¾-inch diameter galvanized steel poles -- four for approximately every 15 feet (4.5 meters) of batting cage length plus four for the initial frame.
Cenozoic Era. The Cenozoic Era began 65 million years ago with an asteroid impact that killed off a majority of the dinosaurs and ends at the present day.The Cenozoic is commonly divided into three periods: 1  Paleogene (65.5 to 23.03 million years ago).2  Neogene (23.03 to 2.6 million years ago).enozoic Era. The Cenozoic Era began 65 million years ago with an asteroid impact that killed off a majority of the dinosaurs and ends at the present day.
An era of geologic time between the Paleozoic and the Cenozoic. The word Mesozoic is from Greek and means middle life.. Cretaceous (145 - 65 million years ago) The Age of Dinosaurs. The final period of the Mesozoic era.he period of time, also known as an eon, between the end of the Precambrian and today, The Phanerozoic begins with the start of the Cambrian period, 544 million years ago.