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Scientific classification
Domain: Eukaryota
(unranked): Hacrobia
(unranked): Katablepharida

The katablepharids, a group of heterotrophic flagellates,[1] have been considered as part of the Cryptophyta since katablepharids were described in 1939. Although they differ from other cryptophytes and have even been proposed to be alveolates, early 21st century research suggests they are related to cryptophytes.[2][3]

Selected katablepharid genera[edit]

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.[1]


  1. ^ a b c d Okamoto N, Chantangsi C, Horák A, Leander BS, Keeling PJ. (2009). Stajich, Jason E., ed. "Molecular Phylogeny and Description of the Novel Katablepharid Roombia truncata gen. et sp. nov., and Establishment of the Hacrobia Taxon nov.". PLoS ONE 4 (9): e7080. Bibcode:2009PLoSO...4.7080O. doi:10.1371/journal.pone.0007080. PMC 2741603. PMID 19759916. 
  2. ^ Noriko Okamoto and Isao Inouye (2005). "The Katablepharids are a Distant Sister Group of the Cryptophyta: A Proposal for Katablepharidophyta Divisio Nova/Kathablepharida Phylum Novum Based on SSU rDNA and Beta-Tubulin Phylogeny". Protist 156 (2): 163–79. doi:10.1016/j.protis.2004.12.003. PMID 16171184. 
  3. ^ Reeb, Vc; Peglar, Mt; Yoon, Hs; Bai, Jr; Wu, M; Siu, P; Grafenberg, Jl; Reyes-Prieto, A; Rümmele, Se; Gross, J; Bhattacharya, D (May 2009). "Interrelationships of chromalveolates within a broadly sampled tree of photosynthetic protists.". Molecular Phylogenetics & Evolution 53 (1): 202–11. doi:10.1016/j.ympev.2009.04.012. ISSN 1055-7903. PMID 19398025. 
  4. ^ a b Kim, E; Graham, Le (Jul 2008). Redfield, Rosemary Jeanne, ed. "EEF2 analysis challenges the monophyly of Archaeplastida and Chromalveolata". PLoS ONE 3 (7): e2621. Bibcode:2008PLoSO...3.2621K. doi:10.1371/journal.pone.0002621. PMC 2440802. PMID 18612431. 

External links[edit]