Ophiothrix is a large genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to Arctic and Antarctic regions. ==Systematics and phylogeny== Ophiothrix is a large genus that is currently divided into the following three subgenera: Acanthophiothrix, Ophiothrix and Theophiothrix`. Extant species include: ... Found on http://en.wikipedia.org/wiki/Ophiothrix