Precambrian marine diversity was dominated by small fossils known as acritarchs. This term describes almost any small organic-walled fossil—from the egg cases of small metazoans to …

Jul 9, 2025 · The Cambrian Explosion may have been less of a burst of evolution, and more of a final flourish. This event, which lasted from around 539 to 519 million years ago, is when the …

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 …

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 …

Dec 21, 2024 · Before the Cambrian Explosion, the planet was home to simple yet fascinating life forms that paved the way for the diversity we see today. Exploring these early organisms …

Jul 31, 2025 · Before the Cambrian, life was mostly soft and squishy. It lacked segmentation, specialization, and protection. But during the explosion, animals began building hard parts …

Jun 28, 2025 · Climate, geology, and biology together gave rise to one of Earth’s most dramatic turning points: the Cambrian explosion. About 530 million years ago, most of the basic body …

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 …

Jun 19, 2017 · In new research published in Geology, however, scientists report that small, shelly fossils once thought to occur only in Cambrian rocks have been found in rocks dating to the …

Jul 14, 2025 · Long before the fossil record burst into the chaotic bloom we call the Cambrian Explosion—before the seas teemed with trilobites, mollusks, and the first spine-tingling …