Bivalvia - Cardiida - Cardiidae
Alternative spelling: Tridacnidae
Synonyms: Chametracheidae Adams and Adams 1857, Chametracheinae Adams and Adams 1857
Parent taxon: Eucardiids according to J. G. Carter et al. 2011
See also Bouchet et al. 2010, Harzhauser et al. 2008, Nevesskaja 2009 and Vokes 1980
Sister taxa: Cardiinae, Cerastodermatinae, Clinocardiinae, Fraginae, Lymnocardiinae, Orthocardiinae, Profraginae, Trapezicardiinae
Subtaxa: Avicularium Byssocardium Hippopus Omanidacna Tridachnes Tridacna
Distribution:
• Quaternary of Australia (2 collections), Cook Islands (1), Djibouti (3), Egypt (2), Eritrea (3), French Polynesia (3), Iran (1), Japan (6), Jordan (4), Kenya (5), Kiribati (2), Pakistan (1), Papua New Guinea (1), Saudi Arabia (14), the Seychelles (9), Sudan (1), Tonga (1), Vanuatu (1), Yemen (2)
• Pliocene to Pleistocene of Malaysia (2)
• Pliocene of Indonesia (1), Japan (1)
• Miocene of Indonesia (5), Malaysia (1), the Marshall Islands (1), Northern Mariana Islands (1), Oman (1)
• Oligocene to Miocene of United States (2: Florida)
• Oligocene of Bulgaria (1), France (1), Italy (1), Oman (1)
• Eocene of France (8), Italy (2), Jamaica (2)
Total: 93 collections including 107 occurrences