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Class: Cephalopoda
| Order | Family | Common | count |
|---|---|---|---|
| Ammonitida | Baculitidae |
5 | |
| Ammonitida | Collignoniceratidae |
2 | |
| Ammonitida | Diplomoceratidae |
3 | |
| Ammonitida | Flickiidae |
Dwarf Ammonites | 1 |
| Ammonitida | Lyelliceratidae |
1 | |
| Ammonitida | Pachydiscidae |
1 | |
| Ammonitida | Parahoplitidae |
1 | |
| Ammonitida | Turrilitidae |
heteromorph | 1 |
| Ammonitida | NaN | 1 |
Formation: Ozan
Fannin County | NS-403
Formation: Ozan
Fannin County | NS-401
Formation: Austin Chalk
Travis County | 15
Formation: Austin Chalk
Travis County | T3-122
Formation: Austin Chalk
Williamson County | W1-488
Formation: Austin Chalk
Williamson County | W1-492
Formation: Eagle Ford/Atco
Ellis County | MID-810
Formation: Austin Chalk
Travis County | 60
Formation: Ozan
Fannin County | NS-692
Formation: Austin Chalk
Travis County | T3-123
Formation: Austin Chalk
Travis County | 18
Formation: Del Rio
Mclennan County | M1-11
Formation: Buda
Williamson County | 61
Formation: Ozan
Fannin County | NS-693
Formation: Glen Rose
Hays County | 381
Formation: Del Rio
Mclennan County | M1-12
