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Sea daisy

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Kingdom
  
Higher classification
  
Xyloplacidae

Rank
  
Genus

Scientific name
  
Xyloplax

Phylum
  
Sea daisy bio1151nicerwebcomLockedmediach333340Echino

Infraclass
  
ConcentricycloideaBaker, Rowe & Clark, 1986

Order
  
PeripodidaBaker, Rowe & Clark, 1986

Family
  
XyloplacidaeBaker, Rowe & Clark, 1986

Similar
  
Pyura spinifera, Homalozoa, Brittle star, Velatida, Asterozoa

Sea daisy nature diary 117


Sea daisies (infraclass Concentricycloidea; order Peripodida) make up an unusual group of deep-sea taxa belonging to the phylum Echinodermata, with three species described in the genus Xyloplax.

Contents

Distribution

Sea daisy New Zealand sea daisy Starfish sea urchins and other echinoderms

Sea daisies have been discovered in three localities, including deep-sea habitats off New Zealand, the Bahamas and most recently from the northern central Pacific. They have been collected primarily from sunken, deep-sea (1000+ meters) wood. Although known from only a handful of specimens initially, nearly 100 specimens have been collected from the Bahamas with decent numbers collected from the north central Atlantic.

Classification

Sea daisy Cereus pedunculatus

Since they were discovered in 1986, their position within the echinoderms has been debated. At first they were placed in a new class, Concentricycloidea, since it was unclear whether they might have affinities with asteroids or ophiuroids. The former view gained acceptance, and since 2006, they are currently considered a sister group to the Infraclass Neoasteroidea, which represents all post-Paleozoic asteroids within the Class Asteroidea.

Class Asteroidea, Infraclass Concentricycloidea, Order Peripoda (or Peripodida), Family Xyloplacidae

  • Genus Xyloplax
  • Xyloplax janetae
  • Xyloplax medusiformis
  • Xyloplax turnerae

  • Sea daisy Sea Daisy The Brighter Side of Daisies I shot these gorge Flickr


    Sea daisy Asteroidea BIO 1240616Echinodermata

    References

    Sea daisy Wikipedia


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