the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Pelecypoda or Conchifera > [noun] > section Asiphonida > family Aviculidae > genus Malleus > member of
hammer-shell1712
mallet-headed oyster1753
hammer-oyster1756
1753 Chambers's Cycl. Suppl. at Ostrea The malleum, or brachiated oister; called the mallet-headed oister.