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Morphology and morphogenesis of Strongylidium pseudocrassum Wang and Nie, 1935, with redefinition of Strongylidium Sterki, 1878  (Protista: Ciliophora: Stichotrichia)

. Zootaxa. 1559, 1 (Aug. 2007), 31–57. DOI:https://doi.org/10.11646/zootaxa.1559.1.2.