Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Cambrian creatures in a colorful explosion A cursory flip through any high school biology textbook will ...

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How ancient bryozoans may have looked. (Zhifei Zhang) The Cambrian explosion was one of the most dramatic chapters in the history of evolution. Around 540 million years ago, a sudden, astonishing ...

Many major groups of animals that have become a mainstay in modern times first appeared during the Cambrian Explosion. However, a new study undertaken by a team of researchers claims that though the ...

Researchers studying ancient rocks from the late Ediacaran period uncovered a fossil evidence that complex animal groups, including the closest known invertebrate relatives of humans, may have existed ...

A research team at Yunnan University has resolved a longstanding mystery regarding Earth’s earliest vertebrates, revealing ...

Biomechanical studies on the arachnid-like front "legs" of an extinct apex predator show that the 2-foot (60 centimeter) marine animal Anomalocaris canadensis was likely much weaker than once assumed.

Five hundred million years ago, tacos existed. But they weren’t corn or flour; they were the hard-shelled coverings on a now-extinct sea creature, Odaraia alata. According to new research, the ...

A newly described species from the Burgess Shale had three eyes, clawed limbs, and a tail full of gills—plus internal organs preserved in stunning detail. Reading time 3 minutes A newly described ...

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Learn more about a time period marked by an intense burst of evolution. 3 min read The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known. The Cambrian ...