Polychaos
Encyclopedia
Polychaos is an amoeboid
Amoeboid
Amoeboids are single-celled life-forms characterized by an irregular shape."Amoeboid" and "amœba" are often used interchangeably even by biologists, and especially refer to a creature moving by using pseudopodia. Most references to "amoebas" or "amoebae" are to amoeboids in general rather than to...

 genus in the Amoebozoa
Amoebozoa
The Amoebozoa are a major group of amoeboid protozoa, including the majority that move by means ofinternal cytoplasmic flow. Their pseudopodia are characteristically blunt and finger-like,...

 group. Several characters unite the species in this genus. The pseudopod
Pseudopod
Pseudopods or pseudopodia are temporary projections of eukaryotic cells. Cells that possess this faculty are generally referred to as amoeboids. Pseudopodia extend and contract by the reversible assembly of actin subunits into microfilaments...

s meld at their bases when the organism is moving, and have dorsal, longitudinal ridges. The nucleus is oval or ellipsoid.

Classification

Polychaos includes the following species:
  • Polychaos dubium (Schaeffer, 1916) (type species)
  • Polychaos fasciculatum (Penard, 1902)
  • Polychaos timidum Bovee, 1972
  • Polychaos nitidubium Bovee, 1970
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