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Comprehensive Description

Description of Phalansterium

Circumscription: Heterotrophic flagellates, forming colonies with cells embedded in an organic globular matrix, a single apical flagellum with tight-fitting continuous cytoplasmic collar. Ultrastructural identity: Mitochondria with tubular cristae, cells with a single apical flagellum with single basal body, anchorage involving concentric rings, which give rise to radiating microtubules. Well-developed dictyosomes associated with basal body. Flagellum with mucus but otherwise without hairs, scales, or other excrescences, no paraxonemal rods. Synapomorphy: Tubulocristate protist with single apical flagellum anchored by a radially symmetrical array of microtubules. Composition: One genus, several species.
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Phalansterium

Phalansterium is a genus of single-celled organisms comprising several species.[1] Phalansterium produces tetraspores.[2]

Phalansterium is hard to classify; it has a distinctive ultrastructure of its pericentriolar material. Molecular evidence places it in the Amoebozoa.[3][4]

It has been suggested that it is similar to the ancestral eukaryote.[5]

References[edit]

  1. ^ "Phalansterium". Encyclopedia of Life. 
  2. ^ Guiry, M.D.; Guiry, G.M. (2008). "Phalansterium". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Retrieved 2009-02-21. 
  3. ^ Thomas Cavalier-Smith, Ema E. -Y. Chaoa and Brian Oates (18 May 2004). "Molecular phylogeny of Amoebozoa and the evolutionary significance of the unikont Phalansterium". European Journal of Protistology 40 (1): 21–48. doi:10.1016/j.ejop.2003.10.001 
  4. ^ Nikolaev, Si; Berney, C; Petrov, Nb; Mylnikov, Ap; Fahrni, Jf; Pawlowski, J (Jun 2006). "Phylogenetic position of Multicilia marina and the evolution of Amoebozoa" (Free full text). International journal of systematic and evolutionary microbiology 56 (Pt 6): 1449–58. doi:10.1099/ijs.0.63763-0. PMID 16738126 
  5. ^ Cavalier-Smith T (March 2002). "The phagotrophic origin of eukaryotes and phylogenetic classification of Protozoa". Int. J. Syst. Evol. Microbiol. 52 (Pt 2): 297–354. PMID 11931142. 
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