Cambrian - Wikipedia
The Cambrian ( / ˈkæmbri.ən, ˈkeɪm -/ KAM-bree-ən, KAYM-) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. [5] . The Cambrian lasted 51.95 million years from …
Cambrian Period - Fossils, Rocks, Animals | Britannica
Oct 18, 2025 · Cambrian rocks have a special biological significance, because they are the earliest to contain diverse fossils of animals. These rocks also include the first appearances of …
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 …
The Cambrian Period
The Cambrian world was bracketed between two ice ages, one during the late Proterozoic and the other during the Ordovician. During these ice ages, the decrease in global temperature led to …
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 …
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...
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 …