Corticata

Corticata ("one with a cortex"), in the classification of eukaryotes (living organisms with a cell nucleus), is a clade suggested by Cavalier-Smith to encompass the eukaryote supergroups of Archaeplastida (plants, red algae, green algae, and glaucophytes) and Chromalveolata (a group including kelp, water moulds, ciliates, dinoflagellates, and other organisms). It is not clear that it is indeed a clade (that is, containing all organisms descended from a common ancestor, and no others).