Superclass Cyclostomata Richards (vertebrate)

Cyclostomata

Synonym: Marsipobranchii

Parent taxon: Craniota according to H. Gadow 1898

See also Jaekel 1911 and Jordan 1963

Sister taxon: Hypostomata

Subtaxa: Hypospondyli Palaeospondyli Petromyzontes

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Ecology:

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