Hallucigenia's Spikes

A new old animal

Stephen Jay Gould - Selected Essays PDF, PDF, Arm

Researchers unravel bizarre prehistoric sea creature fossil

Hallucigenia@Paleozoic Aquarium

Boffins ID freakish spine-smothered prehistoric critter: The claw

New Research from the Burgess Shale: Thorny worms that swarmed in

This Bizarre Spiked Worm Used To Roam The Earth

Spiky little sea 'monster' thrived a half billion years ago

Worm-like ancient 'misfit' finds family in 'tree of life

Hallucigenia - Wikipedia

Evolutionary misfit' Hallucigenia sparsa worm that lived 505