Schizocoelous 1737781 209645129 2008-05-02T06:56:01Z Alan Liefting 36352 cat sort '''Schizocoelous''' development is exclusive to [[protostomes]]: phyla [[Mollusca]], [[Annelida]], and [[Arthropoda]]. The term refers to the order of organization of cells in the [[gastrula]] leading to development of the [[coelom]]. In these three phyla of organisms, the [[mesoderm]] (the middle [[germ layer]]) forms as a solid mass of migrated cells from the single layer of the gastrula. The new mesoderm then splits, creating the pocket-like cavity of the coelom. ==See also== * [[Enterocoelous]] * [[Embryology]] ==External links== * Enterocoelous and schizocoelous conditions - [http://www.utm.edu/departments/cens/biology/rirwin/enteroschizo.htm UTM.edu] [[Category:Developmental biology]] {{developmental-biology-stub}}