Echinothuriidae

Echinothuriidae

[‚ek·ə·nō·thə′rī·ə‚dē]
(invertebrate zoology)
A family of deep-water echinoderms in the order Echinothurioida in which the large, flexible test collapses into a disk at atmospheric pressure.
References in periodicals archive ?
The last family, the Echinothuriidae (Echinothurioida), is represented by a single deep-sea species (Table 1).
On the basis of adult characters, notably aulodont teeth and hollow spines, Mortensen (1927) placed the family in the order Diadematoida, suborder Aulodonta, in the company of the Echinothuriidae, the Pedinidae, and the Diadematidae.