Excavate

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As an adjective, "possessing a ventral feeding groove that collects suspended particles driven into it by the beating of a posterior flagellum." Simpson et al. (2002: 239). The "excavate hypothesis" is the hypothesis that the excavate taxa are monophyletic, vis. the taxon Excavata.

[edit] References

Simpson, A. G. B., R. Radek, J. B. Dacks & C. J. O'Kelly. 2002. How oxymonads lost their groove: an ultrastructural comparison of Monocercomonoides and excavate taxa. Journal of Eukaryotic Microbiology 49: 239-248.

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