506 



MOLLUSCA 



PHYLUM VI 



Families, 



Order 3. Teleodesmacea 



A, Fantodonta 



1. Allodesmidae . 



B. DiOGENODONTA 



Superfamily 1. Cypricardiaeea 



2. Pleurophoridae 

 Superfamily 2. Astartacea 



3. Curtonotidae . 



4. Astartidae 



5. Crassatellitidae 

 Superfamily 3. Cyrenacca 



6. Cyrenidae 



7. Sphaeriidae . , 

 Superfamily 4. Gardüacea 



8. Carditidae 



Superfamily 5. Chamacca 



9. Diceratidae . 



10. Chamidae 



11. Monopleuridae 



12. Caprinidae 



Superfamily 6. liudistacea 



13. Radiolitidae . 



14. Hippuritidae . 

 Superfamily 7. Lucinacea 



15. Tancrediidae . 



16. Unicardiidae . 



17. Lucinidae 



18. Corbidae 



19. Diplodontidae 



20. Cyrenellidae . 



21. Thyasiridae . 



Superfamily 8. Leptonacea 



22. Leptoiiidae . 



23. Galeommatidae 



24. Chlamydoconchidae 



25. Kelliellidae . 

 C. Cyclodonta 



Superfamily 9. Gardiacea 



26. Cardiidae 



27. Limnocardiidae 



Superfamily 10. Tridacnacea 



28. Tridacnidae . 



