Madreporite

Mad're·po·rite noun [ Confer French madréporite ] 1. (Paleon.) A fossil coral. 2. (Zoology) The madreporic plate of echinoderms.
Found on http://www.encyclo.co.uk/webster/M/4

Madreporite

• (n.) The madreporic plate of echinoderms. • (n.) A fossil coral.
Found on http://thinkexist.com/dictionary/meaning/madreporite/

madreporite

(from the article `circulation`) ...system consists of a series of fluid-filled canals lined with ciliated epithelium and derived from the coelom. The canals connect to the outside ... The madreporite, which is usually located externally, takes in water from outside the body; if internally located, as is the case in many ... [2 relat...
Found on http://www.britannica.com/eb/a-z/m/8

Madreporite

The madreporite t is a lightcolored calcerous opening used to filter water into the water vascular system of echinoderms. It acts like a pressure-equalizing valve. It is visible as a small red or yellow button-like structure, looking like a small wart, on the aboral surface of the central disk of a sea star. Close up, it is visibly structured, res...
Found on http://en.wikipedia.org/wiki/Madreporite
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