Almost a hundred new animal species that survived a mass extinction event half a billion years ago have been discovered in a small quarry in China, scientists revealed Wednesday.However it came to a sudden end when up to half of all animals died off 513 million years ago.
Almost a hundred new animal species that survived a mass extinction event half a billion years ago have been discovered in a small quarry in China, scientists revealed Wednesday.
The treasure trove of fossils offers a rare glimpse into a cataclysmic ... [3561 chars]