Rhabdopleurida is one of three orders in the class Pterobranchia, which are small, worm-shaped animals, and the only surviving graptolites.

[4][5] Species in this order are sessile, colonial, connected with a stolon, living in clear water and secrete tubes called tubarium.

They have a single gonad, the gill slits are absent and the collar has two tentaculated arms.

[6] Rhabdopleura is the best studied pterobranch in developmental biology.

Order Rhabdopleurida Fowler, 1892 Nomen dubium: Extinct species: