| Order Squatiniformes DE BUEN, 1926 |
| Family Squatinidae BONAPARTE, 1838 |
| Genus Squatina DUMERIL, 1806 |
| Squatina sp.: Pliocene, Dainichi Formation, Kakegawa Group, Shizuoka Prefecture |
| Squatina subserratus (MÜNSTER, 1846): Langhian, Calvert Formation Randle Cliff, Calvert County, MD |
| 6 mm W |
| Squatina prima (WINKLER, 1874): Ypresian, Fisher/ Sullivan Site, Nanjemoy Formation, Stafford County, Virginia |
| 5.8 mm W |
| Squatina prima (WINKLER, 1874): Thanetian, Aquia Formation (Belevidere Beach), King Georges County, Virginia |
| 10 mm W |
| Squatina sp.: Thanetian, Lille, France |
| 7 mm W |
| Squatina decipiens DALINKEVICIUS, 1935: Santonian, Tyk-Butak, E. Mangyshlak, W. Kazakhstan |
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