A. Bonellia, green hedgehog worm, Bonellia viridis, b. Phascolosoma, splash worm, c. Tailed priap worm or common priap worm, Priapulus caudatus, Historical, digitally restored reproduction from a 19th century original.
A. Bonellia, green hedgehog worm, Bonellia viridis, b. Phascolosoma, splash worm, c. Tailed priap worm or common priap worm, Priapulus caudatus, Historical, digitally restored reproduction from a 19th century original