Media playback is unsupported on your device

Study draws 'virtual harvestmen'

Scientists have used CT scans to make 3D models of fossil harvestmen, revealing just how little these spindly invertebrates have changed in 300 million years.

The X-ray technique allows the researchers to virtually extract the organism from its encapsulating rock and then study key anatomical features on a computer screen.

This creature, Macrogyion cronos, is distinguished here by its long legs, one of which has a big curve.

Modern relatives have a very similar appearance and use these looped structures to grab on to leaf parts as they move through foliage.

Go to next video: CT scan for colossal sea monster