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Title: Malleidae  
Author: World Heritage Encyclopedia
Language: English
Subject: Pterioida, Pteriomorphia
Publisher: World Heritage Encyclopedia


Hammer oyster
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Pteriomorphia
Order: Pterioida
Superfamily: Pterioidea
Family: Malleidae

See text.

Malleidae, or the hammer oysters, is a family of saltwater clams. They are related to the pearl oysters, in the order Pterioida.[1]

The shells of most of them are T-shaped, with the hinge at the top of the T, and with the byssus emrging from the hinge. An oblique ligament holds the hinge. The shell is partially nacreous. There is a single, large adductor muscle. The exhalant current exits at the hinge.

Most hammer oysters live in tropical, coralline areas.


  • Malleus Lamarck, 1799
  • Neoaviculovulsa Okutani & Kusakari, 1987

The following genera have been brought into synonymy.

  • Brevimalleus McLean, 1947 accepted as Malleus Lamarck, 1799
  • Fundella Gregorio, 1884 accepted as Malleus Lamarck, 1799
  • Himantopoda Schumacher, 1817 accepted as Malleus Lamarck, 1799
  • Malleolus Rafinesque, 1815 accepted as Malleus Lamarck, 1799
  • Malvufundus de Gregorio, 1885 accepted as Malleus Lamarck, 1799
  • Parimalleus Iredale, 1931 accepted as Malleus Lamarck, 1799
  • Tudes Oken, 1815 accepted as Malleus Lamarck, 1799


External links

  • ITIS page on Malleidae
  • POPPE images of various Malleidae species
  • To World Register of Marine Species
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