The katablepharids, a group of

heterotrophic A heterotroph (; ) is an organism that cannot produce its own food, instead taking nutrition from other sources of organic carbon, mainly plant or animal matter. In the food chain, heterotrophs are primary, secondary and tertiary consumers, but ...

flagellate A flagellate is a cell or organism with one or more whip-like appendages called flagella. The word ''flagellate'' also describes a particular construction (or level of organization) characteristic of many prokaryotes and eukaryotes and the ...

s, have been considered as part of the

Cryptista Cryptista is a clade of algae-like eukaryotes. It is most likely related to Archaeplastida which includes plants and many algae, within the larger group Diaphoretickes. Although it has sometimes placed along with Haptista in the group Hacrobia, ...

since katablepharids were described in 1939. Although they differ from other cryptophytes and have even been proposed to be

alveolate The alveolates (meaning "pitted like a honeycomb") are a group of protists, considered a major clade and superphylum within Eukarya. They are currently grouped with the stramenopiles and Rhizaria among the protists with tubulocristate mitochon ...

s, early 21st century research suggests they are related to cryptophytes.

Phylogeny

As of 2009, only five genera and ten species have been formally described. Dozens of other DNA sequences (both freshwater and marine) seem to represent further katablepharids which have not been cultured or formally described.

Classification

Based on studies done by Cavalier-Smith, Chao & Lewis 2015 * Super Class Leucocrypta Cavalier-Smith 2015 stat. n. athablepharidophyta (sic)Okamoto & Inouye 2005** Class

Leucocryptea The katablepharids, a group of heterotrophic flagellates, have been considered as part of the Cryptista since katablepharids were described in 1939. Although they differ from other cryptophytes and have even been proposed to be alveolates, early ...

Cavalier-Smith 2004 athablepharidea (sic) Okamoto & Inouye 2005; Kathablepharidophyceae (sic) Okamoto & Inouye 2005*** Order Katablepharida Cavalier-Smith 1993 athablepharida (sic)**** Family Katablepharidae Vors 1992 athablepharidae (sic)***** Genus '' Roombia'' Okamoto et al. 2009 ***** Genus '' Leucocryptos'' Butcher 1967 ***** Genus '' Platychilomonas'' Larsen & Patterson 1990 ***** Genus '' Hatena'' Okamoto & Inouye 2006 ***** Genus '' Katablepharis'' Skuja 1939

References

External links

Tree of Life: Katablepharids
{{Taxonbar, from=Q2109510 Cryptista Katablepharida