Arbacioida

Arbacioida

[är‚bās·ē′ȯid·ə]
(invertebrate zoology)
An order of echinoderms in the superorder Echinacea.
References in periodicals archive ?
The Stirodonta includes a number of extinct stem group lineages and has living taxa in three orders: Salenioida, Arbacioida, and Phymosomatoida (Durham, 1966; Smith, 2005; Smith et al.
The only evidence that bindin is present outside the Echinoida and Arbacioida comes from Moy and Vacquier (1979), who reported that an antibody to bindin of Strongylocentrotus purpuratus reacted with sperm from one species of the order Phymosomatoida and two species of the order Clypeasteroida.