| Gnathophiurina | |
|---|---|
 | |
| Amphipholis squamata | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Ophiuroidea |
| Order: | Ophiurida |
| Suborder: | Gnathophiurina Matsumoto, 1915 |
| Families | |
See text. | |
The Gnathophiurina are a group of Ophiuroidea mostly treated as suborder [1] (but at first as an order Gnathophiurida, [2] and sometimes as infraorder of Ophiurina [3] or not used at all).
Brittle stars, serpent stars, or ophiuroids are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their flexible arms for locomotion. The ophiuroids generally have five long, slender, whip-like arms which may reach up to 60 cm (24 in) in length on the largest specimens.
The Ophiurida are an order of echinoderms within the class Ophiuroidea. It includes the vast majority of living brittle stars.
Amphiuridae are a large family of brittle stars of the suborder Gnathophiurina. Some species are used to study echinoderm development and bioluminescence.
Amphipholis is a large genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to Arctic and Antarctic regions. Some species have been used to study echinoderm development and bioluminescence.
Ophiactidae are a family of brittle stars.
The Euryalina are a suborder of brittle stars, which includes large species with either branching arms or long and curling arms. It is sometimes listed as the order Euryalida.
Ophiuridae are a large family of brittle stars of the suborder Ophiurina.
Ophiotrichidae are a family of brittle stars within the suborder Gnathophiurina.
Ophionereididae are a family of brittle stars.
Ophiolepididae are a family of brittle stars. It includes both deep-sea and shallow-water species.
Ophiopsila is a genus of brittle star belonging to the family Ophiocomidae. Many species are bioluminescent.
Amphipholis squamata, common names brooding snake star and dwarf brittle star, is a species complex of brittle stars in the family Amphiuridae.
Astroboa is a genus of basket stars in the class Ophiuroidea.
Ophiozonella depressa is a species of brittle stars from the family Hemieuryalidae. This species is a type of echinoderm which lives in deep-sea benthic environments. First described by Theodore Lyman in 1878, and then later confirmed by H. Matsumoto in 1915.
Ophiactis is a genus of brittle stars (Ophiuroidea).
Ophiacanthidae is a family of brittle stars. Axel Vilhelm Ljungman circumscribed this taxon in 1867; he initially named the subfamily Ophiacanthinae within the family Amphiuridae. Gordon L. J. Paterson promoted its rank to family in 1985.
Ophiacanthida is an order of echinoderms belonging to the class Ophiuroidea.
Ophiomusa is a genus of echinoderms belonging to the family Ophiolepididae that includes: sea urchins, sand dollars and sea cucumbers. Ophiurida are similar to starfish; they both have a central disc and five arms sprouting from the disc. One of the main distinguishing factors of an Ophiuroid is its arms; the arms of an Ophiurida are longer, thinner, and distinctly separated in comparison to those of a sea star.
Hemipholis is a genus of brittle stars.
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