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We test the hypothesis that conochilid rotifers represent an independent family‐level taxon within Superorder Gnesiotrocha, by analysing their phylogenetic position based on the 18S rDNA sequence of a large number of representatives of this taxon and its putative relatives. Both Bayesian and maximum likelihood analysis confirm a monophyletic clade of all gnesiotrochans with strong branch supports...
The morphology, systematics and distribution of the rotifer genus Scaridium Ehrenberg, 1830 are revised. The genus is transferred from Notommatidae to Scaridiidae, which is reinstated. In all, five species are recognized, two of which, S. montanum sp. n. and S. grandis sp. n., are new to science. Descriptions, a brief biometrical analysis and a key to the species are provided. Scaridium longicaudum...
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