Gryphaeidae
Gryphaeidae (Anglice: foam oysters, honeycomb oysters) sunt familia marinorum molluscorum bivalvium, ad Ostreidas Pectinidasque cognata.

Taxinomia 
Genera et species intra ac familiam in tres subfamilias digeruntur: Exogyrinas, Gryphaeinas, Pycnodonteinas. Exogyrinae Gryphaeinaeque omnino sunt exstinctae, et solum tribus Pycnodonteinarum generibus sunt species exstantes: Hyotissa, Neopycnodonte, et Pycnodonte.

Familia Gryphaeidae Vialov, 1936
 Subfamilia †Exogyrinae Vialov, 1936
 Genus †Amphidonte Fischer von Waldheim, 1829
 Genus †Costagyra Vialov, 1936
 Genus †Exogyra Say, 1820
 Genus †Fluctogyra Vialov, 1936
 Genus †Gryphaeostrea Conrad, 1865
 Genus †Gyrostrea Mirkamalov, 1963
 Genus †Nanogyra Beurlen, 1958
 Genus †Nutogyra Vialov, 1936
 Genus †Planospirites Lamarck, 1801
 Genus †Vultogryphaea Vialov, 1936
 Subfamilia †Gryphaeinae Vialov, 1936
 Genus †Africogryphaea Freneix, 1963
 Genus †Deltoideum Rollier, 1917
 Genus †Gryphaea Lamarck, 1801
 Genus †Liostrea DouvillŽ, 1904
 Genus †Pernostrea Munier-Chalmas, 1864
 Genus †Praeexogyra Charles, 1952
 Subfamilia Pycnodonteinae Stenzel, 1959
 Genus †Gigantostrea (Sacco, 1897)
 Genus Hyotissa Stenzel, 1971
 Genus †Labrostrea Vialov, 1936
 Genus Neopycnodonte Stenzel, 1971
 Genus Pycnodonte (Fischer von Waldheim, 1835)
 Subfamilia Incertae sedis
 Genus †Parahyotissa Harry, 1985
 Genus †Rhynchostreon

Notae 

Familiae animalium
 
Taxa Vyalov
Taxa 1936