 |
| English | Russian |
| the exact age is unknown | возраст точно неизвестен (Their exact age is unknown. They may be as young as Triassic.) |
| the Santonian age | сантон (MichaelBurov) |
| the Santonian age | сантонский век (MichaelBurov) |
| the Santonian age | сантонский возраст (MichaelBurov) |
| the Santonian age | сантонское время (MichaelBurov) |
| the Santonian age | сантонская эпоха (MichaelBurov) |