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D. Dysodonta. 



Superfamille : Mytilacea. — Modiolopsidse, Mytilidie, Dreis- 

 sensiidip, Modiolarcidœ, Prasiniidœ. 



Ordre Anomalodesmacea. 



A. Eusiphonia. 



Superfamille : Anatinagea (suite). — Pandoridw, Lyonwdœ, 

 Ijjonsellidse, Charnostreidœ. 



— Ensiphonacea. — CtavageUidœ. 

 Poromyacea. — Euciroidae, Verticordiidœ, 



PoromyUkv, Cuspidariidœ. 



Ordre Teleodesmacea. 



A. Pantodonta. 

 A UodesmidiB ? 



B. Diogcnodonta. 

 Superfamille : Cypricardiacea. — Pleurophoridce. 



— Astartagea. — Curtonotidœ , Astartidse, 



Crassatellitidœ. 

 Cyrenacea. — Cyrenidœ, Sphceriidse. 



— Carditagea. — Carditidse. 



— Chamacea. — Chamidœ, Mucropleuridœ, Ca- 



prinidse. 



— Rudist^:. — Radiolitidse, Hippuritidie . 



— Lucinacea. — Tancrediidœ , Unicardiidœ, 



LucinidsB, Curbidae ? Diplodonlidse, Cyre- 

 nellidœ, Cryptodontidse. 



— Leptonacea. — Ixptonidie, Galeommidœ, 



Chlamydoconch id;e, Kellyellidie. 



C. Cyclodonta. 

 Superfamille : Cardiacea. — Cardiidee, Adacnidœ ? 



— Tridacnacea. — Tridacnidss. 

 Isocardiacea. — Isocardiidae, ('aUocardiidiv. 



