What is Phanerozoic Eon?
Phanerozoic Eon is a geological time division that ranges from about 542 million years to the present. The name comes from Greek and means "exposed life" because the phaneroic EON is defined as a period during which there were solid macroscopic multicellular organisms, from trilobites, Archeocyath and several other early families. Phanerozoic is the latest of the four geological sciences that have divided the time since his work: Hadean, Archan, Proterozoic and Fenerozoic.
Although this includes only about 10% of the country's total age, the life of the Phaneroic EON that we are known has evolved and covered the planet. Before the phanerozoic, the only living things were numerous unicellular organisms and some blob-like early multicellular organisms similar to disk, which are called Ediacaran Biot. In Greek, the Tergites means: Early Life, Middle Life and Recent Life. Era are separated by massive extinction, the latest, which only occur 65.5 mIlions of years, erase all Neauna dinosaurs and prepare a way for the development of modern mammals.
As far as life is concerned, phanerozoic can be divided into a number of informal "ages". At the beginning of the EON, in the Cambrian period there was a massive evolutionary explosion, known as the Cambrian explosion. During this remarkable period of diversification and evolution, all the main physical plans are still used by all animals to this day. This is often called the "age of invertebrates" because of numerous invertebrate families that have appeared and filled the oceans. It was an early paleozoic when life barely touched the ground.
During the middle paleozoic, the fish were the most numerous organisms and is therefore called the "age of fish". This is around Silurian and Devon. The largest of these fish, Apex Predator Dunklosteus, was the size of the school bus and had a bite with a similar force to a large white shark. The country was still in considerableLifeless measures, but some sponges and worms colonized the coast.
During the late paleozoic, in the carbon and permical period, the reptiles developed and gained the ability to lay eggs with hard shells, allowing them less dependent on the water and the conquest of most of the soil. When the plants were also on the ground, massive tropical forests flourished. When these plants died and were compressed for hundreds of millions of years, they created coal beds rich in the energy that we benefit from today. Late paleozoic is sometimes called the "age of tetrapods".
The mesozoic era was dominated by dinosaurs and is therefore called the age of dinosaurs. This is a period of ancient history that gains the most attention from paleontologists and the general public. Last time, during the Cordinates, we have the "age of mammals", which culminated in the development of homo sapiens , now apparently dominant organism on Earth.