Trisha Shetty

Camerata (Crinoidea)

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Kingdom  Animalia
Subphylum  Crinozoa
Rank  Subclass
Phylum  Echinodermata
Higher classification  Crinoid
Camerata (Crinoidea)
Similar  Crinoid, Cladida, Echinoderm, Monobathrida, Articulata

The Camerata or camerate crinoids are an extinct subclass of Paleozoic stalked crinoids. They originated in the Middle Ordovician and became extinct in the end-Permian mass extinction, and reached their maximum diversity during the Mississippian.

Anatomically, they are distinguished by:

  • fused junctions between the plates of the cup
  • brachial plates incorporated into the cup
  • tegmen forming a rigid roof over the mouth
  • no less than ten and sometimes a very large number of free arms, often pinnulate
  • References

    Camerata (Crinoidea) Wikipedia

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