Spinulosida | |
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Echinaster sepositus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Echinodermata |
Class: | Asteroidea |
Superorder: | Spinulosacea |
Order: | Spinulosida Perrier, 1884 [1] |
Families | |
2 , see text.
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The Spinulosida are an order of sea stars containing at least 120 species in seven genera and one family.
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.[2] No fossil spinulosids have yet been found.[3]