Phalansterium

Phalansterium is a genus of single-celled flagellated organisms comprising several species, which form colonies. Phalansterium produces tetraspores.

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

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

Species
Genus Phalansterium Cienkowsky 1870
 * Species Phalansterium arcticum Shmakova, Karpov & Smirnov 2018
 * Species Phalansterium consociatum (Fresenius 1858) Cienkowsky 1870
 * Species Phalansterium digitatum Stein 1878
 * Species Phalansterium filosum Cavalier-Smith & Chao 2011
 * Species Phalansterium intestinum Cienkowsky 1870
 * Species Phalansterium solitarium Sandon 1924