†family Holocystitidae Miller 1889

Sphaeronitida - Holocystitidae

Parent taxon: Sphaeronitida according to S. Sheffield and C. Sumrall 2017

See also Jell 2010 and Paul 1971

Sister taxa: Aristocystitidae, Sphaeronitidae

Subtaxa: Holocystites Paulicystis Pentacystis Pustulocystis Trematocystinae Trematocystis

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Ecology: stationary epifaunal suspension feeder

Distribution:

• Niagaran of United States (1: Ohio collection)

• Silurian of Australia (1), United States (24: Arkansas, Illinois, Indiana, New York, Tennessee, Wisconsin)

• Ordovician of Canada (2: Quebec)

Total: 28 collections including 57 occurrences

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