Gastropoda - Heterostropha - Xylodisculidae

Parent taxon: Allogastropoda according to S. Kiel and J. L. Goedert 2007

See also Beesley 1998

Sister taxa: Ampezzanildidae, Heterodiscohelix, Levihelix, Mathildoidea

Subtaxa: Xylodiscula

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Ecology: epifaunal

Distribution: found only at Merrick's Bay (Oligocene to Miocene of Washington)

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