TAIOMIDAE
5354
2 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

TAMARITIDAE
3006
1 Sp, 0 Var, 1 Img
(Sea)
(FOSSIL)

TAMESNELLIDAE
2416
2 Sp, 0 Var, 2 Img
(Freshwater)
(FOSSIL)

TANCREDIIDAE
2224
49 Sp, 1 Var, 19 Img
(Sea)
(FOSSIL)

TANTULIDAE
5590
1 Sp, 0 Var, 0 Img
(Freshwater)

TAOUZITIDAE
3040
12 Sp, 0 Var, 3 Img
(Sea)
(FOSSIL)

TAPASHANITIDAE
3448
24 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

TARPHYCERATIDAE
4162
48 Sp, 1 Var, 0 Img
(Sea)
(FOSSIL)

TARPHYCERIDA (UNASSIGNED)
4166
6 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

TATEIDAE
5214
82 Sp, 3 Var, 52 Img
(Freshwater)

TCHURANITHECIDAE
8858
5 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

TECHNOPHORIDAE
1018
31 Sp, 0 Var, 15 Img
(Sea)
(FOSSIL)

TEGULAEDONTIDAE
2432
3 Sp, 0 Var, 3 Img
(Freshwater)
(FOSSIL)

TEGULIDAE
6444
110 Sp, 11 Var, 80 Img
(Sea)

TEICHERTICERATIDAE
3018
28 Sp, 0 Var, 3 Img
(Sea)
(FOSSIL)

TELLINIDAE
2226
937 Sp, 86 Var, 461 Img
(Sea)

TEMERTASSETIIDAE
3580
12 Sp, 0 Var, 11 Img
(Sea)
(FOSSIL)

TEMNOCHEILIDAE
4068
2 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

TEMNOTROPIDAE
6324
6 Sp, 0 Var, 2 Img
(Sea)
(FOSSIL)

TENTACULITIDAE
9034
12 Sp, 0 Var, 3 Img
(Sea)
(FOSSIL)

TEREBRIDAE
5292
614 Sp, 67 Var, 430 Img
(Sea)

TEREDINIDAE
2114
121 Sp, 10 Var, 29 Img
(Sea)

TERQUEMIIDAE
2690
4 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

TESTACELLIDAE
6086
9 Sp, 0 Var, 4 Img
(Land)

TETHYDIDAE
5746
28 Sp, 0 Var, 11 Img
(Sea)

TETRAGONITIDAE
3248
38 Sp, 1 Var, 6 Img
(Sea)
(FOSSIL)

TETRAGONOCERATIDAE
4066
1 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

TETRATHECIDAE
8860
7 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

TEUDOPSIDAE
3722
2 Sp, 0 Var, 1 Img
(Sea)
(FOSSIL)

TEUTHIDA (UNASSIGNED)
3814
10 Sp, 0 Var, 2 Img
(Sea)
(FOSSIL)

THALASSOCERATIDAE
3628
29 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

THAMBOCERATIDAE
3242
1 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

THANAMITIDAE
3362
6 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

THECOSOMATA (UNASSIGNED)
5822
16 Sp, 0 Var, 1 Img
(Sea)
(FOSSIL)

THERSITEIDAE
5154
16 Sp, 0 Var, 14 Img
(Sea)
(FOSSIL)

THETIDITIDAE
3298
28 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

THIARIDAE
5436
289 Sp, 43 Var, 112 Img
(Freshwater)

THISBITIDAE
3428
16 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

THORALIIDAE
2352
1 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

THRACIIDAE
2290
140 Sp, 7 Var, 61 Img
(Sea)

THRINCOCERATIDAE
4102
2 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

THYASIRIDAE
2064
173 Sp, 24 Var, 55 Img
(Sea)

THYLACOCERATIDAE
4016
2 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)

THYROPHORELLIDAE
6050
1 Sp, 0 Var, 1 Img
(Land)

THYSANOPHORIDAE
6032
46 Sp, 3 Var, 7 Img
(Land)

THYSANOTEUTHIDAE
3776
3 Sp, 0 Var, 1 Img
(Sea)

TIBETITIDAE
3412
52 Sp, 0 Var, 0 Img
(Sea)
(FOSSIL)