Pseudomicrothorax Mermod, 1914 (ref. ID; 2013)
Class Kinetofragminophora: Subclass Hypostomata: Order Nassulida: Suborder Microthoracina (ref. ID; 2013)
Class Nassophorea: Order Nassulida (ref. ID; 7340)

Synonym Craspedothorax Sondheim (ref. ID; 1618)

[ref. ID; 1601]
Microthoracina with normal cilia, anchor-like extrusomes, and granular or fine-meshed silverline system, and more than 10 uninterrupted somatic kineties. (ref. ID; 1601)

[ref. ID; 2013]
Body shape oval with right edge more curved than left edge, dorso-ventrally flattened. Covered with rigid and inflexible pellicle. Somatic ciliature in form of several (approx. 15) longitudinal ciliary meridians, more meridians on ventral than dorsal surface. Ventral cilia longer and finer than dorsal cilia. Oral aperture in anterior third of body lying within very slight depression. Cytopharynx supported by basket of delicate trichites. There are 3 compact groups of membranelles on the left of the cytostome and a short curved row of long cilia on its right. The later, which partly encircle the cytostome, do not coalesce to form an undulating membrane but remain free. Beneath this row is a group of 4 cilia and there is another group of four close to the opening of the canal which leads to the centrally placed contractile vacuole. There are many trichocysts below the pellicle. Macronucleus elongate ovoid, centrally placed with single micronucleus.
Quote; Colin R. Curds "British and other freshwater ciliated protozoa Part I Ciliophora: Kinetofragminophora" Cambridge University Press, 1982 (ref. ID; 2013)

Pseudomicrothorax agilis Mermod, 1914 (ref. ID; 1335, 1622, 1629, 4611) reported year? (ref. ID; 1618, 3698) or Mermod (Penard, 1922) (ref. ID; 3593)
See; Craspedothorax gracilis (ref. ID; 3593)
Syn; Pseudomicrothorax gracilis Kahl, 1926 (ref. ID; 1622)
Description; Ellipsoid. (ref. ID; 1618)
Measurements; 48-58 um long. (ref. ID; 1618)
Pseudomicrothorax dubius Maupas, 1883 (ref. ID; 7694) or (Maupas, 1883) Penard, 1922 (ref. ID; 1622) reported author and year? (ref. ID; 131, 191, 3650, 4611, 7340)
Syn; Chilodon dubius Maupas, 1883 (ref. ID; 1622)
Description; 16S-like rRNA sequences. (ref. ID; 7340)
The occurrence of alveolocysts in the somatic cortex. (ref. ID; 7694)