Rigifila
| Rigifila | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota | 
| Clade: | CRuMs | 
| Class: | Hilomonadea | 
| Order: | Rigifilida | 
| Family: | Rigifilidae Yabuki & Cavalier-Smith 2012 | 
| Genus: | Rigifila Yabuki & Cavalier-Smith 2012 | 
| Species: | R. ramosa | 
| Binomial name | |
| Rigifila ramosa Yabuki & Cavalier-Smith 2012 | |
Rigifila (from Latin rigidus 'stiff' and filum 'thread') is a genus of free-living single-celled eukaryotes, or protists, containing the sole species Rigifila ramosa (from Latin ramosus 'branched'). It is classified within the monotypic family Rigifilidae. Along with Micronucleariidae, it is a member of Rigifilida, an order of basal eukaryotes within the CRuMs clade. It differs from Micronuclearia by having two proteic layers surrounding their cytoplasm instead of a single one, and having more irregular mitochondrial cristae, among other morphological differences.