| Order Lamniformes Berg, 1958 |
| Family Odontaspidae Müller & Henle, 1839 |
| Genus Borealotodus Zhelezko, 1999 |
| Borealotodus aff. karpinsky (Menner, 1928): Eocene (Priabonian), Chegan Formation (Kachar), Aktjubinsk Region, W. Kazakhstan |
20111004 Fumio Nakagawa