| unio crassus | | russia: saratov oblast, khoper river | | 1815520688 |
| unio crassus | | russia: saratov oblast, khoper river | | 1815520690 |
| unio crassus | | russia: saratov oblast, khoper river | | 1815520692 |
| unio crassus | | russia: saratov oblast, khoper river | | 1815520845 |
| unio crassus | | russia: saratov oblast, khoper river | | 1815520846 |
| unio crassus | | russia: saratov oblast, khoper river | | 1815520847 |
| unio crassus | | russia: saratov oblast, khoper river | | 1815520984 |
| unio crassus | | russia: saratov oblast, khoper river | | 1815520985 |
| unio crassus | | russia: saratov oblast, khoper river | | 1815520986 |