Doliolida

The Doliolida are an order of small marine chordates of the subphylum Tunicata. They are in the class Thaliacea, which also includes the salps and pyrosomes. The doliolid body is small, typically 1–2 mm long, and barrel-shaped; it features two wide siphons, one at the front and the other at the back end, and eight or nine circular muscle strands reminiscent of barrel bands.

Doliolidae is a family of tunicates in the order Doliolida. Members of the family are pelagic and often found far away from coastlines.

Doliolum is a genus of tunicates, the members of which move via jet propulsion. A detailed description can be found in the article, "On the anatomical structure of the trophozooid of Doliolum denticulatum."

Doliolina is a genus of tunicates belonging to the family Doliolidae.

Dolioletta is a genus of tunicates in the family Doliolidae.

Doliopsis is a genus of tunicates belonging to the family Doliopsidae.

species of chordates