Ecdysozoa families

Echinoderidae is a family of kinorhynchs (also known as mud dragons) in the class Cyclorhagida.

Pycnophyidae is a family of kinorhynchs in the class Allomalorhagida.

Neocentrophyidae is a family of kinorhynchs in the class Allomalorhagida.

Priapulidae is the canonical family of priapulid worms, comprising Priapulus and Priapulosis as well as the Carboniferous genus Priapulites.

Tubiluchidae is one of the two families of priapulimorphidan priapulid worms.

Maccabeus is the sole genus of seticoronarian priapulid worms. It dwells inside an agglutinated tube.

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