Petaloporidae Gregory, 1899

This family includes the genera

1. Bivestis - see Atagma
2. Cavarinella
3. Choristopetalum
4. Coelocochlea
5. Filicrisina
6. Grammanotosoecia
7. Grammascosoecia = Pseudoceriopora
8. Hemicellaria
9. Laterocavea
10. Multicavea
11. Petalopora
12. Phormopora
13. Sparsicavea
14. Sulcocava (Now in Sulcocavidae)

Clavicavea (=Petalopora) page at d'Orbigny Home Page, Natural History Museum.