Ottoia prolifica

Ottoia is a stem-group archaeopriapulid worm known from Cambrian fossils. Although priapulid-like worms from various Cambrian deposits are often referred to Ottoia on spurious grounds, the only clear Ottoia macrofossils come from the Burgess Shale of British Columbia, which was deposited 508 million years ago. Microfossils extend the record of Ottoia throughout the Western Canada Sedimentary Basin, from the mid- to late- Cambrian.

In Popular Culture
An Ottoia was eating a mollusc (In the picture in the Infobox) and got eaten by a Hurdia in the Website The Burgess Shale on Virtual Sea Odyssey on the Predators or Early Life Predators.

It was a major inspiration for the giant Priapulid flesh eating monsters in the 2005 Peter Jackson remake of King Kong (the ones living at the bottom of the cess pit)

In a National Geographic video an Ottoia appears along with Wiwaxias.

The Fog Worms from Primeval where inspired by Ottoia.

In the 1998 movie Deep Rising, the owner of the ship speculates that the creatures that have invaded the ship were a mutant form of Ottoia, but later it is revealed that these are just the tentacles of a larger, octopus-like creature.