A class of the subphylum Sporozoa. Inadequate information about the structure and life cycles of the members of this class has, for many years, resulted in the organisms being classified as parasites of unknown nature. Electron microscope studies have shown structural similarities between this group and the Telosporea, but characteristics of the Telosporea such as the presence of spores (oocysts) and sexual reproduction have only recently been reported for the Toxoplasmea. These findings will necessitate reclassification of the Toxoplasmea.