The term Cambrian for the oldest period of the Paleozoic was officially agreed in 1960, at the 21st International Geological Congress. It only includes Sedgwick's "Lower Cambrian series", but its base …

Cambrian Period, earliest time division of the Paleozoic Era, extending from 538.8 million to 485.4 million years ago.

Jan 22, 2025 · The Cambrian Period marks an important point in the history of life on Earth; it is the time when many kinds of invertebrates and the first vertebrates—fishes—appeared in the fossil record.

Oct 28, 2012 · The Cambrian Period may be divided into three divisions: Lower (Early), Middle, and Furongian (Late). As noted above, trilobites are the most common fossil types, and these dominant …

May 27, 2016 · This period lasted from 541 million to 485.4 million years ago, or more than 55 million years, and marked a dramatic burst of evolutionary changes in life on Earth, known as the "Cambrian...

Learn more about a time period marked by an intense burst of evolution. The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known. The Cambrian...

The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record.

The Cambrian period is divided into three epochs: The Early Cambrian (also Lower Cambrian, Caerfai, or Waucoban), the Middle Cambrian (St Davids or Albertian), and the Late Cambrian or Furongian …

Nov 13, 2022 · The earth witnessed lots of changes during the Cambrian period. This included the appearance of new life forms, climate change, geology, continental rifts, and the mass extinction of a …

The Cambrian Period is the first geological time period of the Paleozoic Era (the “time of ancient life”). This period lasted about 53 million years and marked a dramatic burst of evolutionary changes in life …