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Rigifila ramosa
Scientific classification
Domain: Eukaryota
Phylum: Varisulca
Class: Hilomonadea
Order: Rigifilida
Family: Rigifilidae
Genus: Rigifila
Yabuki & Cavalier-Smith 2012[1]
Species: R. ramosa
Binomial name
Rigifila ramosa
Yabuki & Cavalier-Smith 2012

Rigifila ramosa is one of the two members of the Rigifilida. It differs from the other member Micronuclearia podoventralis by having two pellicular layers covering the cell instead of a single one. Dorsal filopodia are also thicker and more conspicuous than in Micronuclearia.[2]


  1. ^ Cavalier-Smith, Thomas. "Early evolution of eukaryote feeding modes, cell structural diversity, and classification of the protozoan phyla Loukozoa, Sulcozoa, and Choanozoa". European Journal of Protistology. 49 (2): 115–178. doi:10.1016/j.ejop.2012.06.001. 
  2. ^ Yabuki, A., Ishida, K-I., Cavalier-Smith, T. (2013) Rigifila ramosa n. gen., n. sp., a Filose Apusozoan with a Distinctive Pellicle, is Related to Micronuclearia. Protist 164, 75-88.