Jump to navigation Jump to search
- Any of the marine worms of the phylum Priapulida, with a phallic shape and a spiny proboscis.
- Synonym: priapulid
- 2017, Danna Staaf, Squid Empire, ForeEdge, →ISBN, page 30:
- Penis worms today use their hydrostatic skeletons to make burrows with a distinctive shape, and paleontologists have discovered similar shapes in rocks 542 million years old.
marine worm of the phylum Priapulida