Glossobalanus marginatus

Glossobalanus marginatus is a species of acorn worm within the family Ptychoderidae.^[1][2][3] The species was first described from a specimen caught off the Northumberland coast on August 22, 1921, where its discovery extended the known range of acorn worms to the North Sea and coasts of British Isles.^[4] The species inhabits marine waters of the North Sea, Baltic Sea, and coasts of the British Isles.^[4][1][2] The species grows to a length of 15 millimeters.^[2]

Glossobalanus marginatus
Scientific classification
Kingdom:	Animalia
Phylum:	Hemichordata
Class:	Enteropneusta
Order:	Enteropneusta
Family:	Ptychoderidae
Genus:	Glossobalanus
Species:	G. marginatus
Binomial name
Glossobalanus marginatus Meek, 1922