Spinulosida

Spinulosida

[‚spin·yə′läs·əd·ē]
(invertebrate zoology)
An order of Asteroidea in which pedicellariae rarely occur, marginal plates bounding the arms and disk are small and inconspicuous, and spines occur in groups on the upper surface.
References in periodicals archive ?
This finding suggests that there are some differences in the time of appearance of the madreporite between representatives of different orders (Spinulosida and Valvatida).
A reassessment of the sea-star orders Valvatida and Spinulosida. J.
The Asterinidae have usually been classified in the Order Spinulosida (Spencer and Wright 1966).