Dactylochirotida is an order of primitive sea cucumbers. Unlike other sea cucumbers, their tentacles are not divided into multiple branches, and the body is enclosed within a flexible shell-like structure called a test.
Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 995. ISBN 0-03-056747-5.
Dactylochirotida is an order of primitive sea cucumbers. Unlike other sea cucumbers, their tentacles are not divided into multiple branches, and the body is enclosed within a flexible shell-like structure called a test.