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Class: Bivalvia
| Order | Family | Common | count |
|---|---|---|---|
| Carditida | Astartidae |
3 | |
| Carditida | Carditidae |
3 | |
| Carditida | Modiomorphidae |
1 |
Formation: Fort Terrett
Kerr County | K1-1032
Formation: GrahamThrifty
Jack County | J1-786
Formation: GrahamThrifty
Jack County | J1-548
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
