Synonym: Cambrocyathidae Okulitch 1943 [replaced name]

Full reference: V. J. Okulitch. 1950. Nomenclatural notes on pleosponge genera Archaeocyathus, Spirocyathus, Flindersicyathus Pycnoidocyathus and Cambrocyathus. Journal of Paleontology 24(3):393-395

Sister taxa: none

Subtaxa: Metethmophyllum

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Type: Pycnoidocyathus

Distribution: found only at Kuznetsk Alatau, Kiya River section - Unit XIII, Subunits 1-10 (Cambrian of Russian Federation)

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