Phylum of marine sessile worm-like invertebrates, with similarities to hemichordates, which live in chitin tubes.
Source: Conner, 1997.
The following taxa of this phylum occur in the region:
Class Frenulatea
Order Athecanephrida
Order Thecanephrida
Family Sclerolinidae
Family Siboglinidae
Genus Sclerolinum
Genus Siboglinum
Siboglinum ekmani
Siboglinum fiordicum
Siboglinum norvegicum
Sclerolinum brattstromi