DISCOHELICIDAE
6458
48 Sp, 0 Var, 13 Img
(Sea)
(FOSSIL)

DISCOPHYLLITIDAE
3642
11 Sp, 0 Var, 1 Img
(Sea)
(FOSSIL)

DISCOSORIDA (UNASSIGNED)
3972
18 Sp, 0 Var, 3 Img
(Sea)
(FOSSIL)

DISCOSORIDAE
3958
16 Sp, 0 Var, 6 Img
(Sea)
(FOSSIL)

DISSIDOCERATIDAE
4170
1 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

DISTICHITIDAE
3404
14 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

DOLPONELLIDAE
2638
1 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

DOMATOCERATIDAE
4088
14 Sp, 0 Var, 2 Img
(Sea)
(FOSSIL)

DONACIDAE
2208
164 Sp, 32 Var, 106 Img
(Sea)

DONALDINIDAE
6170
39 Sp, 1 Var, 15 Img
(Sea)
(FOSSIL)

DONDERSIIDAE
8234
32 Sp, 1 Var, 7 Img
(Sea)

DONOVANICONIDAE
3906
1 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

DORCASIIDAE
6074
14 Sp, 0 Var, 5 Img
(Land)

DORIDIDAE
5690
144 Sp, 7 Var, 31 Img
(Sea)

DORIDOMORPHIDAE
5678
1 Sp, 0 Var, 1 Img
(Sea)

DORIDOXIDAE
5692
3 Sp, 0 Var, 1 Img
(Sea)

DORSOJUGATIDAE
8864
3 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

DORSOPLANITIDAE
3176
25 Sp, 1 Var, 14 Img
(Sea)
(FOSSIL)

DOTIDAE
5754
103 Sp, 3 Var, 35 Img
(Sea)

DOUVILLEICERATIDAE
3078
32 Sp, 2 Var, 11 Img
(Sea)
(FOSSIL)

DRAPARNAUDIIDAE
6018
7 Sp, 0 Var, 2 Img
(Land)

DREISSENIDAE
2168
60 Sp, 12 Var, 18 Img
(Freshwater)

DREPANOMENIIDAE
8210
6 Sp, 0 Var, 1 Img
(Sea)

DRILLIIDAE
5278
797 Sp, 28 Var, 431 Img
(Sea)

DRONOVITIDAE
3406
1 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

DUALINIDAE
2530
1 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

DUVALIIDAE
3882
33 Sp, 4 Var, 27 Img
(Sea)
(FOSSIL)

DYAKIIDAE
5910
68 Sp, 31 Var, 57 Img
(Land)

DYCHEIIDAE
7476
2 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

DZHULFITIDAE
3432
32 Sp, 0 Var, 24 Img
(Sea)
(FOSSIL)