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Gryphaeidae comprise 4 genuses
Family Gryphaeidae 1/1 Subfamily Pycnodonteinae : 4 Genus -----1/4 Genus Empressostrea: 1 Species----------1/1 Empressostrea kostini-----2/4 Genus Hyotissa: 6 Species----------1/6 Hyotissa hyotis ----------2/6 Hyotissa inermis ----------3/6 Hyotissa mcgintyi ----------4/6 Hyotissa numisma ----------5/6 Hyotissa quercinus ----------6/6 Hyotissa sinensis-----3/4 Genus Neopycnodonte: 2 Species----------1/2 Neopycnodonte cochlear ----------2/2 Neopycnodonte zibrowii-----4/4 Genus Pycnodonte: 1 Species----------1/1 Pycnodonte taniguchii10 Species in Gryphaeidae
(Extracted from WoRMS on February 2026)
NB: status "accepted" and "extant, not fossile-only"