English: Ophiuroids; Brittle stars and Basket stars.
Clades:
Ophiuroidea.
Genera: 270 genera; more than 2000 species; 16 families,
ZooologyOphiuroidea are somewhat similar to sea stars in that they have multiple arms attached to a central disk.
They do not have breathing and excretive systems and they can regenerate lost arms.
CladesEuryalida: Basket stars.
Ophiurida: Brittle stars.