Leptstyrax
ver. 1.0
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| Order Lamniformes Berg, 1958 |
| Family Eoptolamnidae Kriwet et al., 2008 |
| Genus Leptstyrax Williston, 1900 |
| Leptostyrax macrorhiza (Cope 1875): a1,a2; Albian-Cenomanian, Pawpaw Formation, Tarrant County, Texas, b;
Lower Santonian, Tyk-Butak, E. Mangyshlak Peninsula,
W. Kazakstan |
| 20111012 |
Protolamna
ver. 1.2
| Family Eoptolamnidae Kriwet et al., 2008 |
| Genus Protolamna Cappetta, 1980 |
| Protolamna arcuata (Müeller & Diedrich 1991): Lower Santonian, Tyk-Butak, E. Mangyshlak Peninsula, W. Kazakstan |
| Protolamna nugaitensis: Upper Cenomanian, Nugaity, W. Kazakhstan |
| Protolamna sokolovi Cappetta 1980: Albian-Cenomanian, Pawpaw Formation, Tarrant County, Texas |
| Protolamna cappettai (Zhelesko 1990): Albian-Cenomanian, Kolbay, W. Kazakhstan |
| 20120302 |
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Fumio Nakagawa