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Common name: Peanut Worms
Name derivation: “little tube”
Order Count: 4
Family Count: 6
Genus Count: 17
Species Count: 205
Earliest Fossil Record: Early Cambrian 520 mya
Habitat: Marine
Size Range: 2 mm to 40 cm
Notes: Treated by some as a class of Annelids. Based on Catalogue of Life as of March 2025
< Priapulida Annelida >