Collothecacea, Remane, 1933

Davies, Natalie, Lafleur, Alexandre, Hochberg, Rick, Walsh, Elizabeth J. & Wallace, Robert L., 2024, Key to sessile gnesiotrochan rotifers: Families, monospecific species in Flosculariidae, species of Atrochidae, Conochilidae, and Limnias, Zootaxa 5397 (4), pp. 497-520 : 502

Dichotomous key to order Collothecacea

1 Infundibulum bearing setae and/or cilia; with or without lobes (tentacles, knobs, or apices); gelatinous tubes; sessile or planktonic...................................................................... Collothecidae Bartoš, 1959

1’ Infundibulum lacking cilia or setae; unlobed or with one long, very flexible lobe, or with short, horny processes; with or without gelatinous tube; sessile or benthic (crawling)............................................ Atrochidae Bartoš, 1959