Bivalvia - Ostreida - Gryphaeidae

Parent taxon: Pycnodonteinae according to M. C. Perrilliat 1994

Sister taxa: Gigantostrea, Hyotissini, Labrostrea, Neopycnodonte, Neopycnodonteini, Pycnodonte, Pycnodonteini

Subtaxa: Hyotissa aguaclarensis, Hyotissa haitensis, Hyotissa hyotis, Hyotissa paraguanensis, Hyotissa polylopha, Hyotissa tryoni, Hyotissa virleti

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Ecology: stationary epifaunal suspension feeder