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.
According to the Encyclopedia Britannica, geological eras encompass millions of years. The main eras, according to geologists, are the Paleozoic Era, the Mesozoic Era and the Cenozoic Era. The Paleozoic Era, for instance, was approximately 291 million years long, while the Mesozoic Era lasted about 185.5 million years. The Cenozoic Era has been about 65.5 million years long so far as it runs to the present day. Historical eras are defined by certain historical events or a distinctive period of time. For instance, the Elizabethan era is defined by the reign of Queen Elizabeth the First, who was the Queen of England from 1558 to 1603.