Gymnolaemata - Cheilostomata - Eurystomellidae

Synonym: Australianidae Powell 1966

Parent taxon: Catenicelloidea according to D. P. Gordon 2012

See also Bassler 1953, Brown 1952 and Grischenko and Gordon 2004

Sister taxa: Catenicellidae, Concatenellidae, Dicasignetella, Petalostegidae, Savignyellidae

Subtaxa: Eurystomella Integripelta Selenariopsis Zygopalme

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Type: Eurystomella

Ecology: stationary epifaunal suspension feeder

Distribution: found only at Hawkes Bay (Pliocene of New Zealand)

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