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Scientific classification
Domain: Eukaryota
(unranked) Bikonta
(unranked): Corticata*
Lankester 1878, emend. Cavalier-Smith 2002


Corticata ("one with a cortex"), in the classification of eukaryotes (living organisms with a cell nucleus), is a clade suggested by Cavalier-Smith[1] to encompass the eukaryote supergroups of the following two groups:

It can also be described as all Bikonts that are not Excavates or Rhizaria.

Corticata as originally defined is probably not a clade (that is, containing all organisms descended from a common ancestor, and no others).[3] It has been redefined to include Rhizaria.[4][5]

See also[edit]


  1. ^ Cavalier-Smith, T. (2002). "The phagotrophic origin of eukaryotes and phylogenetic classification of Protozoa". International Journal of Systematic and Evolutionary Microbiology. 52 (Pt 2): 297–354. doi:10.1099/00207713-52-2-297. PMID 11931142. 
  2. ^ Cavalier‐Smith, T. (2009). "Megaphylogeny, cell body plans, adaptive zones: causes and timing of eukaryote basal radiations". The Journal of eukaryotic microbiology. 56 (1): 26–33. doi:10.1111/j.1550-7408.2008.00373.x. PMID 19340985. 
  3. ^ Burki F, Shalchian-Tabrizi K, Minge M, Skjæveland Å, Nikolaev SI, et al. (2007). Butler G, ed. "Phylogenomics Reshuffles the Eukaryotic Supergroups". PLoS ONE. 2 (8: e790): e790. doi:10.1371/journal.pone.0000790. PMC 1949142Freely accessible. PMID 17726520. 
  4. ^ Cavalier-Smith, Thomas (2010). "Kingdoms Protozoa and Chromista and the eozoan root of the eukaryotic tree". Biology Letters. doi:10.1098/rsbl.2009.0948. 
  5. ^ Thomas Cavalier-Smith, Ema E. Chao, Elizabeth A. Snell, Cédric Berney, Anna Maria Fiore-Donno, and Rhodri Lewis. 2014. "Multigene eukaryote phylogeny reveals the likely protozoan ancestors of opisthokonts (animals, fungi, choanozoans) and Amoebozoa". Molecular Phylogenetics and Evolution 81:71–85. doi:10.1016/j.ympev.2014.08.012