Cambrian - Wikipedia
Currently the boundaries of the Cambrian System, three series and six stages are defined by global stratotype sections and points. [1] The lower boundary of the Cambrian was originally …
Cambrian Period | Definition, Plants, & Animals | Britannica
Cambrian Period, earliest time division of the Paleozoic Era, extending from 538.8 million to 485.4 million years ago.
Cambrian Period—541 to 485.4 MYA - U.S. National Park Service
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 …
Cambrian Period - National Geographic
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 …
The Cambrian Period and Its Explosion of Life - Biology Insights
Jul 26, 2025 · The Cambrian Period represents a significant chapter in Earth’s deep history. Spanning from approximately 541 to 485.4 million years ago, this geological time division is …
Cambrian - Wikiwand
The Cambrian is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. The Cambrian lasted 51.95 million years from the end of the preceding...
Cambrian - New World Encyclopedia
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 …
Cambrian Period | Natural History Museum
Oct 28, 2012 · The Cambrian* Period begins the Phanerozoic Eon, the last 542 million years during which fossils with hard parts have existed. It is the first division of the Paleozoic Era …
The Cambrian – An Explosion of Life - Davidson Institute of …
Nov 19, 2022 · During the Cambrian Period, which began about 541 million years ago and ended about 485 million years ago, a sudden wave of rapid increase in the diversity of biological …