It is the eon during which abundant animal and plant life has proliferated, diversified and colonized various niches on the Earth's surface, beginning with the Cambrian period when animals first developed hard shells that can be clearly preserved in the fossil record.

Feb 21, 2025 · The Phanerozoic, the eon of visible life, is divided into three major spans of time largely on the basis of characteristic assemblages of life-forms: the Paleozoic (541 million to 252 million years ago), Mesozoic (252 million to 66 million years ago), and Cenozoic (66 million years ago to the present) eras.

May 28, 2021 · The Phanerozoic Eon is the current eon in the geologic time scale. It began around 541 million years ago (mya), and encompasses Earth’s history from then to the present day. It represents around 12% of Earth’s total history.

The Phanerozoic eon is the interval of geologic time spaning from the appearance of abundant, macroscopic, hard-shelled fossils, roughly 542 million years ago (mya), to the present time.

Apr 11, 2024 · The Phanerozoic Eon is the most recent, 541 million years ago to today, and means “visible life” because the Phanerozoic rock record is marked by an abundance of fossils. Phanerozoic organisms had hard body parts like claws, scales, shells, and bones that were more easily preserved as fossils.

The Phanerozoic eon is the current eon on the geologic timescale. It is the one in which abundant animal life has existed. It covers about 541 million years, and goes back to the time when hard-shelled animals first appeared. It was once thought that …

Dec 30, 2013 · The Phanerozoic is the current geologic eon in the geologic time scale, and the one during which abundant animal life has existed. It covers roughly 542 million years (541.0 ± 1.0) and goes back to the time when diverse hard-shelled animals first appeared.

The Phanerozoic Eon is the current eon in Earth’s history, spanning from around 541 million years ago to the present day. Major geological events and periods within the Phanerozoic Eon include the Cambrian explosion, the formation of Pangaea, and the mass extinctions at the end of the Permian and Cretaceous periods.

May 21, 2024 · The Phanerozoic is the most recent of four geologic eons that divide up time on Earth since its formation: the Hadean, Archean, Proterozoic, and Phenerozoic. Although it only encompasses about 10% of the Earth’s total age, it is throughout the Phanerozoic Eon that the life with which we are familiar evolved and covered the planet.

The Phanerozoic Eon represents geologic time from the end of Precambrian time, approximately 544 to 570 million years ago (mya), until the present day. As such, the Phanerozoic Eon includes the Paleozoic Era , the Mesozoic Era , and the current Cenozoic Era .