Researchers at the University of Leicester have discovered a rare marine fossil that is related to crabs, lobsters and shrimps.
The fossil is special as it is exceptionally well preserved. It's 10 millimeters long and is complete with the shell and the soft parts, such as its body, limbs, eyes, gills and alimentary system.
The fossils were reconstructed ‘virtually’, by using a technique that involves grinding each specimen down, layer by layer, and photographing it at each stage.
It was found in 425 million year old rock in Herefordshire. The rocks date back to the Silurian period, when southern Britain was a sea area on a small continent situated in warm, southerly subtropical latitudes.
They were covered by a layer of volcanic ash that preserved them frozen in time.
The research was undertaken together with Professor Derek Siveter and Dr Sarah Joomun (Oxford), Dr Mark Sutton (Imperial College London) and Professor Derek Briggs (Yale, USA).