Paleozoic - Wikipedia 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
Paleozoic Era | Description, Climate, Facts | Britannica Paleozoic Era, major interval of geologic time that began 538 8 million years ago with the Cambrian explosion, an extraordinary diversification of marine animals, and ended about 252 million years ago with the end-Permian extinction, the greatest extinction event in Earth history
Paleozoic | U. S. Geological Survey - USGS. gov Paleozoic (541-252 million years ago) means ‘ancient life ’ The oldest animals on Earth appeared just before the start of this era in the Ediacaran Period, but scientists had not yet discovered them when the geologic timescale was made
Paleozoic Era: Facts Information - Live Science The Paleozoic Era, which ran from 541 million to 251 9 million years ago, was a time of great change on Earth The era began with the breakup of one supercontinent and the formation of
The Paleozoic Era - University of California Museum of Paleontology The Paleozoic is bracketed by two of the most important events in the history of animal life At its beginning, multicelled animals underwent a dramatic "explosion" in diversity, and almost all living animal phyla appeared within a few millions of years
Paleozoic Era - U. S. National Park Service In North America, the Paleozoic is characterized by multiple advances and retreats of shallow seas and repeated continental collisions that formed the Appalachian Mountains Common Paleozoic fossils include trilobites and cephalopods, as well as insects and ferns
Paleozoic Era: Facts, Timelines Animals and extinctions - Fossilicious Noted as a time of dramatic evolutionary, climate and geological change, the Paleozoic Era lasted between 541 to 251 902 million years ago This Era is so diverse and lengthy that it has been further subdivided into six unique geologic periods ranging from the oldest to the youngest
PALEOZOIC Definition Meaning - Merriam-Webster The meaning of PALEOZOIC is of, relating to, originating in, or being an era of geologic history that extends from the beginning of the Cambrian to the close of the Permian and is marked by the culmination of nearly all classes of invertebrates except the insects and in the later epochs by the appearance of terrestrial plants, amphibians, and
PALEONTOLOGY 6: PALEOZOIC ERA - Colorado State University Paleozoic Era as the beginning of the Phanerozoic Eon As you know from making your own timeline of Earth’s history, the Hadean, Archean, and Proterozoic Eons are not to scale in the image to the right The Phanerozoic Eon is scaled With this issue, you will begin the survey of life during the Paleozoic Era as revealed by the fossil record
Paleozoic Era | EBSCO Research Starters The Paleozoic Era, spanning from approximately 544 to 251 million years ago, is the oldest era of the Phanerozoic eon and marks a significant period in Earth's history characterized by diverse and complex life forms