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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Bursostoma

Bursostoma Vorosvary, 1950 (ref. ID; 2013)

Class Kinetofragminophora: Subclass Vestibulifera: Order Colpodida (ref. ID; 2013)

[ref. ID; 2013]
Body shape ellipsoid to reniform, uniformly ciliated with many longitudinal/oblique rows which originate around the edge of the vestibular opening. The vestibulum is spherical and well developed opening via a figure-of 8 slit. The vestibulum is ciliated internally and contains 2 large membranelles. The cytostome lies at the bottom of the vestibulum. Macronucleus large and sausage-shaped, single small rounded micronucleus. Single contractile vacuole surrounded by several small serving canals.
Quote; Colin R. Curds "British and other freshwater ciliated protozoa Part I Ciliophora: Kinetofragminophora" Cambridge University Press, 1982 (ref. ID; 2013)
  1. Bursostoma bursaria (ref. ID; 191)