The schizocoely mechanism occurs when secondary body cavities (coeloms) are formed by splitting a solid mass of mesodermal embryonic tissue.
[1][2] All schizocoelomates are protostomians[contradictory] and they show holoblastic, spiral, determinate cleavage.
[3][4] This refers to the fact that fluid-filled body cavities are formed by splitting of mesodermal cells.
Schizocoelous development often occurs in protostomes,[1][5][6] as in phyla Mollusca, Annelida, and Arthropoda.
[8] The term refers to the order of organization of cells in the gastrula leading to development of the coelom.