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Oxytricha trifallax.jpg
Oxytricha trifallax
Scientific classification
Domain: Eukaryota
(unranked): SAR
(unranked): Alveolata
Phylum: Ciliophora
Class: Spirotrichea
Subclass: Stichotrichia
Small & Lynn 1985
Typical orders


The stichotrichs are a group of ciliate protozoa, included among the spirotrichs. Like the hypotrichs, with which they were originally classified, they have body cilia fused into cirri, but these are mostly arranged into rows, running along the ventral surface or edges of the cell. Most stichotrichs are flattened and reasonably flexible. Stylonychia and Oxytricha are representative genera. Some evidence suggests that the hypotrichs may be paraphyletic to them, and that they in turn may be paraphyletic to the oligotrichs.


The draft macronuclear genome of Oxytricha trifallax was published in 2013.[1]


  1. ^ Swart EC, Bracht JR, Magrini V, Minx P, Chen X, Zhou Y, Khurana JS, Goldman AD, Nowacki M, Schotanus K, Jung S, Fulton RS, Ly A, McGrath S, Haub K, Wiggins JL, Storton D, Matese JC, Parsons L, Chang WJ, Bowen MS, Stover NA, Jones TA, Eddy SR, Herrick GA, Doak TG, Wilson RK, Mardis ER, Landweber LF (2013). "The Oxytricha trifallax macronuclear genome: a complex eukaryotic genome with 16,000 tiny chromosomes". PLoS Biol. 11 (1): e1001473. doi:10.1371/journal.pbio.1001473. PMC 3558436free to read. PMID 23382650. 

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