Calcarea


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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.
References in periodicals archive ?
Her behavior was worse for one day after taking the Calcarea phosphorica, then the anger and frustration diminished.
Tenders are invited for Supply of Aesculus Calcarea Supply of Aesculus Calcarea phosphorica,Calcarea sulphurica, Ferrum phosphoricum, Kali muriaticum, Kali sulphuricum, Kali phosphoicum, Magnesium phosphoricum, Magnesium sulphuricum, Natrum muriaticum, Natrum phosphoricum, Natrum sulphuricum, Silicea
Remedies: Actea Spicata, Allium Sativa, Calcarea Fluorica, Calcarea Silicata, Calcarea Sulphurica, Dulcamara, Fagus, Gossypium, Magnesia Sulphuric Opunta vulgaris, Pseudotsuga, Rhus Venanata, Sarsaparilla, Taraxicum, Teucreum, Upas, Veronica officianalis, Viola Tricolorata.
Since the government turned to belladonna, calcarea and tuberculinum in 2000, incidence of Japanese encephalitis (JE) and deaths due to it have drastically come down.
I then joined with Calcarea carbonica, which I used for 'worn-out mother syndrome'.
princeps), in premontane forest (Reinhardtia paiewonsckiana), in pine-oak forest (Brahea calcarea, B.
PARAGUAY, "In regione calcarea cursus superioris fluminis Apa", Hassler 10996 (HOLOTYPE: K
In contrast, Macoma calcarea was most abundant at R2 and, as a filter-feeding bivalve, competition with mussels for phytoplankton may have limited the beneficial effect of the substrate provided by the mussel structure at the other sites, especially where M.
calcarea 'Lillet', a free-flowering variety producing purple flowers over leathery green leaves from late spring to early summer.
calcarea Lillet,a free-flowering variety producing purple flowers over leathery green leaves from late spring to early summer.
Good choices include P calcarea Lillet, producing purple flowers over leathery green leaves from late spring to early summer.