Paleozoic

The Paleozoic Era is the earliest of three geologic eras of the Phanerozoic Eon. It is the longest of the Phanerozoic eras, lasting from 538.8 to 251.902 million years ago, and is subdivided into six geologic periods: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian. The Paleozoic comes after the Neoproterozoic Era of the Proterozoic Eon and is followed by the Mesozoic Era. The Paleozoic was a time of dramatic geological, climatic, and evolutionary change. The Cambrian witnessed the most rapid and widespread diversification of life in Earth's history, known as the Cambrian explosion, in which most modern phyla first appeared. Arthropods, molluscs, fish, amphibians, synapsids and diapsids all evolved during the Paleozoic. Life began in the ocean but eventually transitioned onto land, and by the late Paleozoic, great forests of primitive plants covered the continents, many of which formed the coal beds of Europe and eastern North America.

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Clay-assisted organic carbon burial induced early Paleozoic atmospheric oxygenation - EurekAlert

New research confirms a common origin of sound production and communication among choanate vertebrates dating back to the Paleozoic.

Paleozoic Plymouths: Plymouth, Massachusetts, and Plymouth, England, Share a Historical Connection Even Older Than the First Thanksgiving

Longest known continuous record of the Paleozoic discovered in Yukon wilderness

Longest known continuous record of the Paleozoic discovered in Yukon wilderness