Calcarea

Calcarea

[kal′kar·ē·ə]
(invertebrate zoology)
A class of the phylum Porifera, including sponges with a skeleton composed of calcium carbonate spicules.

Calcarea

 

(or Calcispongiae), an order of marine invertebrate sponges. The skeleton of these sponges is formed from three-rayed, four-rayed, or uniaxial calcareous spicules. The structure of the canal system varies; all three types are encountered (ascon, sycon, and leucon). The Calcarea are small (usually no more than 7 cm high) individual or colonial animals. The body often has a tubular or barrel-like shape. The sponges live mainly in shallow waters. There are approximately 100 species in the order. There are more than ten species in the Soviet seas; the most common genera are Leucosolenia, Sycon, and Leucandra.

REFERENCES

Rukovodstvo po zoologii, vol. 1. Moscow-Leningrad, 1937.
Burton, M. A Revision of the Classification of the Calcareous Sponges.London, 1963.
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Nevada Homeopathic and Integrative Medical Association Fall Conference 2014: Part 1

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