Spinulosida
| Spinulosida | |
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| File:Zeester.JPG | |
| Echinaster sepositus | |
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Spinulosida
Perrier, 1884 [1]
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The Spinulosida are an order of sea stars containing at least 120 species in seven genera and two families.
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]
Taxonomy
The following family is recognised by the World Register of Marine Species:[1]
- Echinasteridae Verrill, 1870
References
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