Dimorphid

Taxobox
color = khaki
name = Dimorphids
domain = Eukaryota
unranked_phylum = Rhizaria
phylum = Cercozoa
classis = Proteomyxidea?
ordo = Heliomonadida
subdivision_ranks = Genera
subdivision = "Dimorpha"
"Tetradimorpha"The dimorphids or heliomonads are a small group of heliozoa that are unusual in possessing flagella throughout their life-cycle. There are two genera: "Dimorpha", a tiny organism found in freshwater, and the larger "Tetradimorpha", which is distinguished by having four rather than two flagella. Bundles of microtubules, typically in square array, arise from a body near the flagellar bases and support the numerous axopods that project from the cell surface.

Dimorphids have a single nucleus, and mitochondria with tubular cristae. Genetic studies place them among the Cercozoa, a group including various other flagellates that form pseudopods.