Spinulosida
Encyclopedia
Spinulosida are an order
of sea star
s containing at least 120 species.
Spinulosids completely lack pedicellariae and have a delicate skeletal arrangement. Their name comes from the presence of numerous low spines on the aboral (upper) surface. No fossil spinulosids have yet been found.
Order (biology)
In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...
of sea star
Sea star
Starfish or sea stars are echinoderms belonging to the class Asteroidea. The names "starfish" and "sea star" essentially refer to members of the class Asteroidea...
s containing at least 120 species.
Spinulosids completely lack pedicellariae and have a delicate skeletal arrangement. Their name comes from the presence of numerous low spines on the aboral (upper) surface. No fossil spinulosids have yet been found.
Taxonomy
- Family EchinasteridaeEchinasteridaeEchinasteridae is a family of sea stars in the order Spinulosida.-Genera:* Echinaster Müller and Troschel, 1840 * Henricia Gray, 1840 * Odontohenricia Rowe and Albertson, 1988 * Poraniopsis Perrier, 1891 * Stegnaster Sladen, 1889...
- Genus Echinaster Müller and Troschel, 1840
- Genus HenriciaHenriciaHenricia is a genus of slender-armed sea stars belonging to the family Echinasteridae.The sea stars from this genus are ciliary suspension-feeders, filtering phytoplankton.- Species :...
Gray, 1840 - Genus Odontohenricia Rowe and Albertson, 1988
- Genus Poraniopsis Perrier, 1891
- Genus StegnasterStegnasterStegnaster is a genus of sea stars of the family Echinasteridae, endemic to New Zealand.-Species:* Stegnaster inflatus * Stegnaster wesseli Perrier, 1876...
Sladen, 1889
- Family Mithrodiidae
- Genus Mithrodia Gray, 1840
- Genus Thromidia Pope & Rowe, 1977