From the creepiest Cambrian critters to massive marine reptiles, wonderfully weird sea creatures have inhabited our oceans for over half a billion years. We've put together a list of 25 of the ...

A spectacularly preserved creature, dubbed Lyrarapax unguispinus, was unearthed in China. The 520-million-year-old sea creature was so well-preserved that parts of its brain and nervous system were ...

An event as simple as the world's first bite may have sparked an ancient "explosion" of life 500 million years ago that led to the rise of the broad groups of animals that are still alive today. A ...

A spectacularly well-preserved sea monster that once prowled the oceans during the Cambrian Period has been unearthed in China. The 520-million-year-old creature, one of the first predators of its day ...

If you could dip your head into the oceans of Earth as they appeared 500 million years ago, you might see what looked like a spiny, disembodied claw cruising through the depths while trying to stuff ...

Grand Canyon fossils in the Bright Angel formation reveal 500M-year-old animals with dual feeding structures, reshaping ...

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 ...

The fossilized organisms of the Cambrian period some 500 million years ago are both alien and familiar. A few of them look a lot like the creatures around us today. But even some that don’t look at ...

A spectacularly well-preserved sea monster that once prowled the oceans during the Cambrian Period has been unearthed in China. The 520-million-year-old creature, one of the first predators of its day ...

A spectacularly well-preserved sea monster that once prowled the oceans during the Cambrian Period has been unearthed in China. The 520-million-year-old creature, one of the first predators of its day ...