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Scientific classification
Domain: Eukaryota
(unranked): Excavata
Division: Euglenozoa
Class: Postgaardea[1]
Order: Postgaardida
Cavalier-Smith 2003
Family: Postgaardidae
Cavalier-Smith 2016
Genus: Postgaardi
Fenchel et al. 1995
  • Postgaardi mariagerensis Fenchel et al. 1995

Postgaardi mariagerensis is a species of single-celled eukaryote in the Euglenozoa. Some have classified it in a class called Postgaardea along with Calkinsia, but as of 2009, Postgaardi is not well enough known to confidently determine its relationship with other organisms in the Euglenozoa.[1] Both it and Calkinsia do live in low oxygen environments and are covered with bacteria which live on their surface.[1]


The only species in the genus Postgaardi is P. mariagerensis.[1][2]


  1. ^ a b c d Yubuki, N; Edgcomb, Vp; Bernhard, Jm; Leander, Bs (Jan 2009). "Ultrastructure and molecular phylogeny of Calkinsia aureus: cellular identity of a novel clade of deep-sea euglenozoans with epibiotic bacteria" (Free full text). BMC Microbiology. 9: 16. doi:10.1186/1471-2180-9-16. PMC 2656514Freely accessible. PMID 19173734. 
  2. ^ Guiry, M.D.; Guiry, G.M. (2008). "Postgaardi". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2009-02-22. 

Further reading[edit]