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Class: Gastropoda
| Order | Family | Common | count |
|---|---|---|---|
| Littorinimorpha | Aporrhaidae |
Pelican's Foot Snails | 4 |
| Littorinimorpha | Naticidae |
Moon Snails | 6 |
| Littorinimorpha | Personidae |
1 | |
| Littorinimorpha | Tylostomatidae |
3 |
Formation: Austin Chalk
Williamson County | W1-697
Formation: Walnut
Travis County | T1-701
Formation: Walnut
Bell County | BL1-833
Formation: Comanche Peak
Bell County | BL2-869
Formation: Austin Chalk
Williamson County | W1-716
Formation: Fort Terrett
Kerr County | K1-904
Formation: Comanche Peak
Bell County | BL1-906
Formation: Fort Terrett
Kerr County | K1-719
Formation: Walnut
Travis County | T1-702
Formation: Fort Terrett
Kerr County | K1-903
Formation: Stone City
Burleson County | WB-92
Formation: Glen Rose
Bandera County | B2-910
Formation: Comanche Peak
Bell County | BL2-911
Formation: Comanche Peak
Coryell County | 912
