Cryptista is a clade of alga-like eukaryotes. It is most likely related to Archaeplastida which includes plants and many algae, within the larger group Diaphoretickes.[2]
Although it has sometimes placed along with Haptista in the group Hacrobia, within the kingdom Chromista,[3] most recent studies have found that Hacrobia is not a clade.[4] For example, in 2016, a broad phylogenomic study found that cryptists fall within the group Archaeplastida, while haptophytes are closely related to the SAR supergroup.[5][6]
^Burki F; Kaplan M; Tikhonenkov DV; Zlatogursky V; Minh BQ; Radaykina LV; Smirnov A; Mylnikov AP; Keeling PJ (2016), "Untangling the early diversification of eukaryotes: a phylogenomic study of the evolutionary origins of Centrohelida, Haptophyta and Cryptista.", Proc Biol Sci, 283 (1823): 20152802, doi:10.1098/rspb.2015.2802, PMC4795036, PMID26817772