Family Harrimaniidae Spengel 1901 (acorn worm)

Enteropneusta - Harrimaniidae

Parent taxon: Enteropneusta according to C. B. Cameron 2016

Sister taxa: Spartobranchus, Spengelidae

Subtaxa: Megaderaion Saccoglossus

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Distribution:

• Jurassic of Italy (1 collection)

• Carboniferous of United States (1: Illinois)

Total: 2 collections each including a single occurrence

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