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Spicule :: Spicule (n.) Any small calcareous or siliceous body found in the tissues of various invertebrate animals, especially in sponges and in most Alcyonaria..

Tubulipore :: Tubulipore (n.) Any one of numerous species of Bryozoa belonging to Tubulipora and allied genera, having tubular calcareous calicles..

Calcispongiae :: Calcispongiae (n. pl.) An order of marine sponges, containing calcareous spicules. See Porifera..

Calcareo-bituminous :: Calcareo-bituminous (a.) Consisting of, or containing, lime and bitumen..

Cockup :: Cockup (n.) A large, highly esteemed, edible fish of India (Lates calcarifer); -- also called begti..

Calcarated :: Calcarated (a.) Having a spur, as the flower of the toadflax and larkspur; spurred..

Hepar :: Hepar (n.) Any substance resembling hepar proper, in appearance; specifically, in homeopathy, calcium sulphide, called also hepar sulphuris calcareum (/)..

Spirillum :: Spirifer (n.) Any one of numerous species of fossil brachipods of the genus Spirifer, or Delthyris, and allied genera, in which the long calcareous supports of the arms form a large spiral, or helix, on each side..

Calcareousness :: Calcareousness (n.) Quality of being calcareous.

Testicardines :: Testicardines (n. pl.) A division of brachiopods including those which have a calcareous shell furnished with a hinge and hinge teeth. Terebratula and Spirifer are examples.

Calcar :: Calcar (n.) A slender bony process from the ankle joint of bats, which helps to support the posterior part of the web, in flight..

Palus :: Palus (n.) One of several upright slender calcareous processes which surround the central part of the calicle of certain corals.

Dissepiment :: Dissepiment (n.) One of the transverse, calcareous partitions between the radiating septa of a coral..

Retepore :: Retepore (n.) Any one of several species of bryozoans of the genus Retepora. They form delicate calcareous corals, usually composed of thin fenestrated fronds..

Tufa :: Tufa () A soft or porous stone formed by depositions from water, usually calcareous; -- called also calcareous tufa..

Serpula :: Serpula (n.) Any one of numerous species of tubicolous annelids of the genus Serpula and allied genera of the family Serpulidae. They secrete a calcareous tube, which is usually irregularly contorted, but is sometimes spirally coiled. The worm has a wreath of plumelike and often bright-colored gills around its head, and usually an operculum to close the aperture of its tube when it retracts..

Anchor :: Anchor (n.) One of the anchor-shaped spicules of certain sponges; also, one of the calcareous spinules of certain Holothurians, as in species of Synapta..

Hippocampus :: Hippocampus (n.) A name applied to either of two ridges of white matter in each lateral ventricle of the brain. The larger is called hippocampus major or simply hippocampus. The smaller, hippocampus minor, is called also ergot and calcar..

Septum :: Septum (n.) One of the radial calcareous plates of a coral.

Argillo-calcareous :: Argillo-calcareous (a.) Consisting of, or containing, clay and calcareous earth..

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