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  1. Cambrian explosion - Wikipedia

    The Cambrian explosion (also known as Cambrian radiation[1] or Cambrian diversification) is an interval of time beginning approximately 538.8 million years ago in the Cambrian period of the early …

  2. Cambrian explosion | Evolution, Paleontology & Geology | Britannica

    Cambrian explosion, the unparalleled emergence of organisms between 541 million and approximately 530 million years ago at the beginning of the Cambrian Period. The event was characterized by the …

  3. The Cambrian explosion - Understanding Evolution

    Around 530 million years ago, a wide variety of animals burst onto the evolutionary scene in an event known as the Cambrian explosion. In perhaps as few as 10 million years, marine animals evolved …

  4. The Cambrian explosion’s spark | Stanford Report

    Jul 2, 2024 · New research provides the clearest evidence to date that a rapid burst of evolution 540 million years ago could have been caused by a small increase in oxygen in Earth’s atmosphere and …

  5. What Is the Cambrian Explosion and Why Was It So Important?

    Jul 31, 2025 · But the “explosion”—that rapid burst of evolutionary innovation—occurred mostly within the first 20 to 25 million years of the Cambrian, making it extraordinarily fast by geological standards.

  6. What Sparked the Cambrian Explosion? - Scientific American

    Feb 16, 2016 · What Sparked the Cambrian Explosion? An evolutionary burst 540 million years ago filled the seas with an astonishing diversity of animals. The trigger behind that revolution is finally …

  7. Current understanding on the Cambrian Explosion: questions

    Jul 14, 2021 · The Cambrian Explosion by nature is a three-phased explosion of animal body plans alongside episodic biomineralization, pulsed change of generic diversity, body size variation, and …

  8. Did the Cambrian explosion really happen? - Live Science

    Jul 8, 2023 · It wasn't truly an explosion, he told Live Science, but rather a gradual increase in biodiversity that took place throughout the early Paleozoic era (541 million to 251.9 million years ago).

  9. How the cambrian exploded: Contingency in the history of science and ...

    Oct 1, 2025 · So how did the Cambrian explosion come to overshadow all other evolutionary explosions to become “ the Cambrian explosion”? And how have these developments shaped discussions of the …

  10. Cambrian Period—541 to 485.4 MYA - U.S. National Park Service

    Jan 22, 2025 · This locality reveals the presence of creatures originating from the “Cambrian explosion”—an evolutionary burst of animal origins dating from 545 to 525 million years ago. The …