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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Chaos

Chaos Linnaeus, 1758 (ref. ID; 6733) or 1767 (ref. ID; 3687, 4238, 4739, 7615)

Class Tubulinea: Order Tubulinida (ref. ID; 6789)
Lobosea: Gymnamoebia (ref. ID; 7077)
Family Amoebidae Ehrenberg, 1838 (ref. ID; 7615)

Synonym Amoeba Ehrenberg (ref. ID; 1923) Terminology according to A.A. Schaeffer, 1926.

[ref. ID; 1923]
Large amoebae with indeterminate pseudopods directing locomotion. One nucleus, or 2 (rarely many). (ref. ID; 1923)

[ref. ID; 4739]
Re-diagnosis; Multinucleate. Commonly polypodial, with pseudopodia produced from one main stem whose diameter often is greater than that of the pseudopodia. Most cytoplasmic crystals distinct bipyramids. Cell surface coat of distinct, separate filaments radiating from plasma membrane; inner nuclear lamina organised as a loose honeycomb-like layer in species whose ultrastructure is known. (ref. ID; 4739)
Type species; Chaos chaos (Linnaeus, 1758), unidentifiable. (ref. ID; 4739)

[ref. ID; 7615]
Multinucleate. Commonly polypodial, with pseudopodia produced from one main stem. Most cytoplasmic crystals distinct bipyramids. Cell coat of discrete, crinkled or wavy filaments, and inner nuclear lamina in form of a loosely organised honeycomb-like layer in species whose ultrastructure is known. (ref. ID; 7615)
Type species; Chaos chaos (Linnaeus, 1758), unidentifiable. (ref. ID; 7615)
  1. Chaos carolinense (ref. ID; 4728, 4817, 4837, 7077)
  2. Chaos carolinensis (Wilson, 1900) (ref. ID; 3746) reported author and year? (ref. ID; 3877, 4672)
  3. Chaos chaos (Linnaeus, 1758) (ref. ID; 4739, 7615)
  4. Chaos diffluens Ehrenberg, 1830 (ref. ID; 3687)
  5. Chaos diffluens O.F. Muller, 1786 (ref. ID; 3687) reported year? (ref. ID; 1923)
    Syn; Amoeba proteus Pallas (ref. ID; 1923)
  6. Chaos discoides Schaffer (ref. ID; 5624)
  7. Chaos illinoisensis (ref. ID; 4672)
  8. Chaos nobile (ref. ID; 4817, 4836, 7077)
  9. Chaos protheus Linnaeus, 1767 (ref. ID; 1618)
    Syn; Volvox chaos Linnaeus, 1758 (ref. ID; 1618)
  10. Chaos zoochlorellae Willumsen, 1982
    See; Parachaos zoochlorellae (ref. ID; 4739)

Chaos carolinense (ref. ID; 4728, 4817, 4837, 7077)

Descriptions

Molecular analysis. (ref. ID; 7077)

Chaos diffluens O.F. Muller, 1786 (ref. ID; 3687) reported year? (ref. ID; 1923)

Synonym

Amoeba proteus Pallas (ref. ID; 1923)

Descriptions

A common form, very changeable in the shape of the body; usually with numerous pseudopods, sharply distinguished from the body. Nucleus single, discoid, 40-50 um. Protoplasm with bipyramid crystals. One contractile vacuole. Habitat both stagnant and clear water. (ref. ID; 1923)

Measurements

Size, during reptation, 300-600 um. (ref. ID; 1923)

Chaos nobile (ref. ID; 4817, 4836, 7077)

Descriptions

Molecular analysis (CCAP#1511/2, The Culture Collection of Algae and Protozoa, CEH Windermere, UK). (ref. ID; 7077)