The genus Zdzitowieckitrema, with the single species Zdzitowieckitrema incognitum, described by Sokolov, Lebedeva, Gordeev, & Khasanov in 2017,[3] is yet unplaced within the suborder Xiphidiata.
^Olson, P.D.; Cribb, T.H.; Tkach, V.V.; Bray, R.A.; Littlewood, D.T.J. (July 2003). "Phylogeny and classification of the Digenea (Platyhelminthes: Trematoda)". International Journal for Parasitology. 33 (7): 733–755. doi:10.1016/S0020-7519(03)00049-3. PMID12814653.
^Sokolov, S. G.; Lebedeva, Daria I.; Gordeev, Ilya I.; Khasanov, F. K. (14 December 2017). "Zdzitowieckitrema incognitum gen. et sp. nov. (Trematoda, Xiphidiata) from the Antarctic fish Muraenolepis marmorata Günther, 1880 (Gadiformes: Muraenolepidae): ordinary morphology but unclear family affiliation". Marine Biodiversity. 49: 451–462. doi:10.1007/s12526-017-0830-0. S2CID255612288.