It was a creature so strange that experts literally could not make heads nor tails of it. But scientists said on Wednesday a new analysis of fossils of Hallucigenia, so named for its fantastical ...

A Hallucigenia sparsa fossil from the Burgess Shale in Canad. The fossil is 15 mm long. Jean-Bernard Caron Hallucigenia -- a thumb-sized worm that went extinct over 400 million years ago -- left ...

Hallucigenia sparsa, one of most common creatures 500m years ago, had previously baffled scientists as an anatomical misfit without distinguishable head or rear Nature has produced many oddities, but ...

Scientists on Wednesday announced they can now give the world a new picture of Hallucigenia sparsa, a sea oddball that was so strange, it looks like something out of a hallucination or nightmare.

Researchers have found teeny tiny teeth in a creature half a billion years old so strange it was named Hallucigenia. Michelle Starr is CNET's science editor, and she hopes to get you as enthralled ...

A worm-like creature that lived half a billion years ago had spikes, several pairs of legs, a pair of eyes and a throat lined with teeth, experts have announced. Hallucigenia had previously been ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's colour reconstruction of Hallucigenia sparsa is shown in this image released to Reuters on June 23, 2015.