Image produced by Dr. Russell Garwood (University of Manchester)

Eophrynus pretvicii - This 312 million year old spiny creature is a member of an extinct group of arachnids called the trigonotarbids, closely related to the spiders. Because of fossils like this, studied through X-ray microtomography reconstruction, we know a lot about the biology of this group whose members were the first predators on land, despite the fact they went extinct over 250 million years ago.