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| Locality | Formation | Age | Ophiacanthidae | Ophiuridae | Ophiolepididae |
| Folkestone (UK) | Gault Clay, level 2 | Albian | 11 | 0 | 72 |
| Folkestone (UK) | Gault clay, level 6 | Albian | 0 | 0 | 206 |
| Mosqueruela (E) | Mosqueruela Formation | Aptian | 17 | 9 | 535 |
| Saginaw, Texas (USA) | upper Duck Creek Formation | Albian | 0 | 0 | 100 |
| Waco, Texas (USA) | Del Rio Formation | Cenomanian | 1 | 0 | 58 |
