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| Group | Order | Family | Common | count |
|---|---|---|---|---|
| Sharks | Lamniformes | Anacoracidae | 1 | |
| Sharks | Lamniformes | Mitsukurinidae | Goblin | 1 |
| Sharks | Lamniformes | Ptychodontidae | Shell-Crushing | 3 |
| Lamniformes | Anacoracidae | 3 | ||
| Lamniformes | Mitsukurinidae | Goblin | 6 | |
| Lamniformes | Otodontidae | Megatoothed | 2 | |
| Lamniformes | Ptychodontidae | Shell-Crushing | 1 | |
| Lamniformes | _None | 5 | ||
| zNone | _None | 1 |
>Order: Lamniformes
Formation: Eagle Ford/Atco
Ellis County | MID-797
Formation: Eagle Ford/Atco
Grayson County | PO-587
Formation: Eagle Ford/Atco
Grayson County | PO-594
Formation: Eagle Ford/Atco
Ellis County | MID-804
Formation: Eagle Ford/Atco
Ellis County | MID-803
Formation: Eagle Ford/Atco
Grayson County | PO-588
Formation: Eagle Ford/Atco
Grayson County | PO-589
Formation: Eagle Ford/Atco
Grayson County | PO-590
Formation: Eagle Ford/Atco
Grayson County | PO-591
Formation: Eagle Ford/Atco
Grayson County | PO-592
Formation: Eagle Ford/Atco
Grayson County | PO-628
Formation: Eagle Ford/Atco
Grayson County | PO-593
Formation: Eagle Ford/Atco
Ellis County | MID-798
Formation: Eagle Ford/Atco
Ellis County | MID-806
Formation: Eagle Ford/Atco
Ellis County | MID-805
Formation: Eagle Ford/Atco
Grayson County | PO-586
Formation: Eagle Ford/Atco
Ellis County | MID-807
Formation: Eagle Ford/Atco
Grayson County | PO-629
Formation: Eagle Ford/Atco
Grayson County | PO-595
Formation: Eagle Ford/Atco
Grayson County | PO-596
Formation: Eagle Ford/Atco
Grayson County | PO-597
Formation: Eagle Ford/Atco
Grayson County | PO-630
>Order: zNone
Formation: Eagle Ford/Atco
Williamson County | W2-603
1-root/robust root
2-bourlette
3-serrations
4-root notch
5-crown
6-cusp
7-enamel