Calcispongiæ (kalsisponjie)

pl. [NL., hardened by deposits of of concen doderm; impregnation and early embryonic stages of development are carried on while the ova remain in the body of the parent. In a wider sense, the Calcispongicæ include the physemarians as well as the olynthians, and are primarily divided into the two orders Physemaria and Olynthoidea. The former consists of the genera Haliphy sema and Gastrophysema; the latter is divided into four suborde rs, A scones, Sycones, Leucones, and Phare trones. They are also called Cal care a, and are differently divided under that name.