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 ...

Fossils of a tiny sea creature that lived 525 million years ago have preserved something paleontologists rarely find: a brain. The specimen, a worm-like animal called Cardiodictyon catenulum recovered ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

Since soon after our planet formed, Earth's 4.6 billion-year-long history was dominated by single-celled life. Something dramatic happened about 500 million years ago called the Cambrian "explosion," ...