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| Group | Order | Common | count |
|---|---|---|---|
| 1-Protobranchia | Nuculanida |
3 | |
| 1-Protobranchia | Nuculida |
2 | |
| 2-Isofilibranchia | Mytilida |
True Mussels | 5 |
| 3-Pteriomorphia | Arcida |
9 | |
| 3-Pteriomorphia | Cardiida |
1 | |
| 3-Pteriomorphia | Pectinida |
Scallops | 16 |
| 3-Pteriomorphia | Pterioida |
20 | |
| 4-Heteroconchia | Cardiida |
13 | |
| 4-Heteroconchia | Carditida |
6 | |
| 4-Heteroconchia | Lucina |
Hatchet Clams | 6 |
| 4-Heteroconchia | Solenida |
1 | |
| 4-Heteroconchia | Trigoniida |
6 | |
| 4-Heteroconchia | Venerida |
20 | |
| 5-Anomalodesmata | Myida |
3 | |
| 5-Anomalodesmata | Pholadomyoida |
11 | |
Caenogastropoda |
1 | ||
Carditida |
1 | ||
Pterioida |
2 | ||
UNK_BIV |
5 |
>Order: Arcida
Formation: Fort Terrett
Kerr County | K1-814
Formation: Glen Rose
Kerr County | K4-827
Formation: Austin Chalk
Williamson County | W1-1021
Formation: Georgetown
Williamson County | W3-1056
Formation: Austin Chalk
Williamson County | W1-687
Formation: Comanche Peak
Bell County | BL2-913
Formation: Comanche Peak
Bell County | BL2-914
Formation: Fort Terrett
Kerr County | K1-915
Formation: Glen Rose
Bandera County | B2-726
>Order: Caenogastropoda
Formation: Fort Terrett
Kerr County | K1-1060
>Order: Cardiida
Formation: Glen Rose
Bandera County | B1-712
Formation: Glen Rose
Kerr County | K4-841
Formation: Fort Terrett
Kerr County | K1-842
Formation: Fort Terrett
Kerr County | K1-1029
Formation: Fort Terrett
Kerr County | K1-1052
Formation: Glen Rose
Kerr County | 67
Formation: Comanche Peak
Bell County | BL2-843
Formation: Comanche Peak
Bell County | BL2-916
Formation: Glen Rose
Kerr County | K1-808
Formation: Fort Terrett
Kerr County | K1-861
Formation: Walnut
Travis County | T1-918
Formation: Fort Terrett
Kerr County | K1-824
Formation: Fort Terrett
Kerr County | K2-39
Formation: Comanche Peak
Lampasas County | L1-458
>Order: Carditida
Formation: Fort Terrett
Kerr County | K1-1032
Formation: Segovia
Kimble County | 986
Formation: Walnut
Bell County | BL1-836
Formation: Stone City
Burleson County | WB-391
Formation: Bromide
zOK (Carter) County | OK1-620
Formation: GrahamThrifty
Jack County | J1-786
Formation: GrahamThrifty
Jack County | J1-548
>Order: Lucina
Formation: Glen Rose
Kerr County | K3-1038
Formation: Comanche Peak
Bell County | BL2-1037
Formation: Fort Terrett
Kerr County | K1-1039
Formation: Fort Terrett
Kerr County | K1-1040
Formation: Fort Terrett
Kerr County | K1-1041
Formation: Fort Terrett
Kerr County | K1-815
>Order: Myida
Formation: Woodbine
Fannin County | 1057
Formation: Glen Rose
Comal County | 182
Formation: Glen Rose
Williamson County | 1024
>Order: Mytilida
Formation: Fort Terrett
Kerr County | K1-950
Inoperna concentricecostellata
Formation: Walnut
Travis County | T1-847
Formation: Fort Terrett
Kerr County | K1-816
Formation: Other
McCulloch County | 1027
Formation: Fort Terrett
Kerr County | K1-848
>Order: Nuculanida
Formation: GrahamThrifty
Jack County | J1-549
Formation: Barnett Shale
San Saba County | lnup765
Formation: GrahamThrifty
Jack County | J1-517
>Order: Nuculida
Formation: Fort Terrett
Kerr County | K1-1030
Formation: GrahamThrifty
Jack County | J1-547
>Order: Pectinida
Formation: GrahamThrifty
Jack County | J1-551
Formation: Glen Rose
Kerr County | K5-727
Formation: Glen Rose
Kerr County | K5-728
Formation: Glen Rose
Kerr County | K5-729
Formation: Stone City
Burleson County | WB-392
Formation: Fort Terrett
Kerr County | K1-1058
Formation: Buda
Williamson County | W2-643
Formation: Fort Terrett
Kerr County | K1-820
Formation: Georgetown
Williamson County | W3-1006
Formation: Georgetown
Williamson County | W3-1009
Formation: Georgetown
Williamson County | W3-989
Formation: Walnut
Coryell County | 1000
Formation: Austin Chalk
Williamson County | W1-776
Formation: Buda
Williamson County | 370
Formation: Austin Chalk
Williamson County | W1-718
Formation: Austin Chalk
Travis County | 331
>Order: Pholadomyoida
Formation: Fort Lancaster
Crockett County | 1053
Formation: Glen Rose
Kerr County | K4-822
Formation: Comanche Peak
Bell County | BL2-835
Formation: Del Rio
Val Verde County | 1003
Formation: Fort Terrett
Kerr County | K1-22
Formation: Other
zUnknown County | 813
Formation: Fort Terrett
Kerr County | K1-818
Formation: Walnut
Travis County | T1-844
Formation: Fort Terrett
Kerr County | K1-919
Formation: Fort Terrett
Kerr County | K1-845
Formation: Glen Rose
Kerr County | K3-691
>Order: Pterioida
Formation: Georgetown
Williamson County | W3-1011
Formation: Austin Chalk
Williamson County | W1-1020
Formation: Eagle Ford
Williamson County | 1015
Formation: Comanche Peak
Bell County | BL2-846
Formation: Fort Lancaster
Crockett County | 1036
Formation: Buda
Williamson County | 686
Formation: GrahamThrifty
Jack County | J1-779
Formation: Comanche Peak
Bell County | BL2-829
Formation: Comanche Peak
Bell County | BL2-830
Formation: Fort Terrett
Kerr County | K1-812
Formation: Fort Terrett
Kerr County | K1-826
Formation: Fort Terrett
Kerr County | K1-821
Formation: Austin Chalk
Travis County | 7
Formation: Austin Chalk
Williamson County | W1-490
Formation: Boquillas
Brewster County | wtexas168
Formation: Ozan
Fannin County | NS-369
Formation: Eagle Ford/Atco
Ellis County | MID-980
Formation: Eagle Ford/Atco
Grayson County | PO-668
Formation: Eagle Ford/Atco
Grayson County | PO-667
Formation: Austin Chalk
Williamson County | 264
Formation: Eagle Ford
Williamson County | 90
Formation: Austin Chalk
Williamson County | 116
>Order: Solenida
Formation: Comanche Peak
Bell County | BL1-840
>Order: Trigoniida
Formation: Buda
Travis County | T2-645
Formation: Fort Terrett
Kerr County | K1-819
Formation: Glen Rose
Kerr County | K5-831
Formation: Georgetown
Williamson County | W3-1008
Formation: Glen Rose
Kerr County | 1059
Formation: Glen Rose
Hays County | 382
>Order: UNK_BIV
Formation: Fort Lancaster
Crockett County | 1035
Formation: Austin Chalk
Williamson County | W1-725
Formation: Fort Terrett
Kerr County | K1-53
Formation: Austin Chalk
Williamson County | W1-495
Formation: Glen Rose
Bandera County | B1-714
>Order: Venerida
Formation: Glen Rose
Kerr County | K1-933
Formation: Glen Rose
Kerr County | K4-935
Formation: Glen Rose
Travis County | 1025
Formation: Glen Rose
Kendall County | 47
Formation: Glen Rose
Kerr County | K3-45
Formation: Fort Terrett
Kerr County | K2-931
Formation: Fort Terrett
Kerr County | K1-932
Formation: Glen Rose
Kerr County | K4-934
Formation: Glen Rose
Kerr County | K4-720
Formation: Walnut
Bell County | BL1-828
Formation: Fort Terrett
Kerr County | K1-823
Formation: Comanche Peak
Bosque County | 917
Formation: Glen Rose
Kerr County | K1-809
Formation: Fort Terrett
Kerr County | K1-1054
Formation: Glen Rose
Kerr County | K1-817
Formation: Fort Terrett
Kerr County | K1-927
Formation: Glen Rose
Kerr County | K4-721
Formation: Glen Rose
Bandera County | B2-924
Formation: Fort Terrett
Kerr County | K1-926
Formation: Glen Rose
Kerr County | K4-928
| Period | Formation | count |
|---|---|---|
| Cretaceous | Austin Chalk | 12 |
| Cretaceous | Boquillas | 1 |
| Cretaceous | Buda | 4 |
| Cretaceous | Comanche Peak | 12 |
| Cretaceous | Del Rio | 1 |
| Cretaceous | Eagle Ford | 2 |
| Cretaceous | Eagle Ford/Atco | 3 |
| Cretaceous | Fort Lancaster | 3 |
| Cretaceous | Fort Terrett | 35 |
| Cretaceous | Georgetown | 6 |
| Cretaceous | Glen Rose | 30 |
| Cretaceous | Other | 1 |
| Cretaceous | Ozan | 1 |
| Cretaceous | Segovia | 1 |
| Cretaceous | Walnut | 6 |
| Cretaceous | Woodbine | 1 |
| Eocene | Stone City | 2 |
| Mississipian | Barnett Shale | 1 |
| Ordivician | Bromide | 1 |
| Pennsylvanian | GrahamThrifty | 7 |
| Pennsylvanian | Other | 1 |