Paxillosida
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| Paxillosida | |
|---|---|
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| Luidia magnifica | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Subphylum: | Eleutherozoa |
| Class: | Asteroidea |
| Order: | Paxillosida Perrier, 1884 |
| Families | |
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See text. |
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Paxillosida are a large order of sea stars.
[edit] Characteristics
Paxillosida adults lack an anus and have no suckers on their tube feet. They do not develop the brachiolaria stage in their early development[1]. They possess marginal plates, and have sessile pedicellariae. They mostly inhabit soft-bottomed environments of sand or mud.[2]
[edit] Systematics
Recent analyses suggest that Paxillosida may be a sister taxon of Asterina[3]. The order is divided into the following families[4]
[edit] References
- ^ Matsubara, M., Komatsu, M., Araki, T., Asakawa, S., Yokobori, S.-I., Watanabe, K. & Wada, H. (2005) The phylogenetic status of Paxillosida (Asteroidea) based on complete mitochondrial DNA sequences. Molecular Genetics and Evolution, 36, 598–605
- ^ Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 948. ISBN 0-03-056747-5.
- ^ Matsubara, M., Komatsu, M., Araki, T., Asakawa, S., Yokobori, S.-I., Watanabe, K. & Wada, H. (2005) The phylogenetic status of Paxillosida (Asteroidea) based on complete mitochondrial DNA sequences. Molecular Genetics and Evolution, 36, 598–605
- ^ MarineSpecies.org - Paxillosida Perrier, 1884
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