Rhizaria classes

thumb|right|Life cycle of Plasmodiophora brassicae in [[cabbage.]] 220px|thumb|Clubroot on cauliflower

The Ascetosporea are a group of eukaryotes that are parasites of animals, especially marine invertebrates. The two groups, the haplosporids and paramyxids, are not particularly similar morphologically, but consistently group together on molecular trees, which place them near the base of the Cercozoa. Both produce spores without the complex structures found in similar groups (such as polar filaments or tubules).

REDIRECT Gromiida

Proteomyxidea is a class of Endomyxa. Although it is known to be paraphyletic, further research is needed before its classification can be improved.