Period Cm

Cambrian

538.8000 – 486.8500 Ma

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 Ediacaran Period 538.8 Ma to the beginning of the Ordovician Period 486.85 Ma.

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Cambrian
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© Scotese, Christopher R.; Vérard, Christian; Burgener, Landon; Elling, Reece P.; Kocsis, Ádám T. · CC BY 4.0
Cambrian
Cambrian
News 12
Early Cambrian Fossil Rewrites Starfish Family Tree
Early Cambrian Fossil Rewrites Starfish Family Tree
A 518-million-year-old ambulacrarian fossil from China suggests that the common ancestor of starfish and their relatives was not a burrowing worm; it was probably a tentacled animal that fed from the water around it. The post Early Cambrian Fossil Rewrites Starfish Family Tree appeared first on Sci.News: Breaking Science News.
21/10/2026 sci-news
Chemosymbiosis between Animals and Microbes May Predate the Cambrian: Study
Chemosymbiosis between Animals and Microbes May Predate the Cambrian: Study
A tubular marine creature that lived on the seafloor more than 540 million years ago may have survived in toxic, sulfur-rich waters by teaming up with bacteria. The post Chemosymbiosis between Animals and Microbes May Predate the Cambrian: Study appeared first on Sci.News: Breaking Science News.
28/09/2026 sci-news
Episode 177: Cambrian Fecal Revolution
The Cambrian Explosion is one of the most significant events in evolutionary history. Classically, it describes the sudden appearance of complex fossils (including all major animal groups) at the beginning of the Cambrian Period. Before then it was thought that only relatively simple single-celled or multicellular life existed. We now understand this event to be [&hellip
17/08/2026 palaeocast
Remarkable Eoceras shaanxiense Fossils Rewrite Cephalopod Evolution
Researchers have identified tiny fossils from the Shuijingtuo Formation (Cambrian Stage 3) of South China that could transform our understanding of cephalopod evolution. The newly described species, Eoceras shaanxiense, provides the oldest known evidence of a primordial siphuncle, a crucial anatomical feature that enabled cephalopods to regulate buoyancy and eventually become some of the oceans'
03/08/2026 everythingdinosaur
520-Million-Year-Old Fossil from China Fills Gap in Evolutionary History of Cephalopods
520-Million-Year-Old Fossil from China Fills Gap in Evolutionary History of Cephalopods
Paleontologists have identified the earliest-known cephalopod equipped with a siphuncle -- a tubular extension of the mantle found in shelled cephalopods -- pushing back the fossil record of this key evolutionary feature to the Early Cambrian, roughly 520 million years ago. The post 520-Million-Year-Old Fossil from China Fills Gap in Evolutionary History of Cephalopods appeared first on Sci.News: Breaking Science News.
30/07/2026 sci-news
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Parent interval
Paleozoic Era
Sub-intervals 4
Terreneuvian
538.8000 – 521.0000
Series 2
521.0000 – 506.5000
Miaolingian
506.5000 – 497.0000
Furongian
497.0000 – 486.8500