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Amoebozoa is a supergroup
of Eukaryotes that unifies lobose amoebae, pelobionts,
entamoebids, and slime molds (Cavalier-Smith 1998). The
monophyly of Amoebozoa has been proposed based on SSU rRNA gene
phylogenies (Bolivar et al. 2001; Milyutina et al. 2001; Fahrni
et al. 2003) and combined analyses of protein sequences (Baldauf
et al. 2000; Arisue et al. 2002; Bapteste et al. 2002; Forget et
al. 2002). Recently, Cavalier-Smith et al. (2004) and Nikolaev
et al. (unpublished) have shown that the mysterious flagellated
protists Phalansterium and Multicilia also belong
to the Amoebozoa. Phylogenetic analyses within this supergroup
allow the distinction of six monophyletic clades within two main
groups. The Tubulina, Acanthopodina, Conopodina, and Vannellina
belong to the Lobosea (Smirnov et al. unpublished), while the
Archamoebae and Mycetozoa belong to the Conosea (Cavalier-Smith
1998). Both Lobosea and Conosea also include several independent
lineages, and relationships between the six main clades and
these independent lineages are not resolved yet.
Figure :
Bayesian phylogeny of Amoebozoa inferred from SSU rRNA gene
sequences using the GTR+G+I model of evolution.
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