| Rigifilida | |
|---|---|
Scientific classification | |
| Clade: | CRuMs |
| Class: | Hilomonadea Cavalier-Smith 2008 emend. 2012[1] |
| Order: | Rigifilida Cavalier-Smith in Yabuki et al. 2012 |
| Families | |
Rigifilida is a clade of non-ciliatephagotrophiceukaryotes. It consists of two genera:Micronuclearia andRigifila.
Cells of rigifilids are covered with either a single or a double-layered submembrane pellicular lamina that makes them rigid in consistence. Slender branchingfilopodia emanate from a ventral aperture of thecell and are employed to collectbacteria upon which they feed and to attach the organism to the substratum. Around this aperture, the pellicle is reflexed around forming a peristomial collar.Other notable features are flat and irregular shapedmitocondrial cristae, a single dorsalnucleus and the lack ofcentrioles andcilia.[2]
| Scotokaryota |
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Rigifilida is currently placed inCRuMs.[4]