| Cephalodiscus, Rhabdopleurida, Pterobranchia, Rhabdopleura normani, Harrimaniidae|
Cephalodiscida is one of two orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates. Species in this order are sessile, living in clear water and secrete tubes on the ocean floor.
The order is a small one, with only two known families, each containing a single genus.
Order CephalodiscidaFamily Atubaridae
Species Atubaria heterolopha Sato, 1935