identified by scientist Quaternary Holocene recent unknown FEU-1012468 | identified by M. Hesemann Quaternary Holocene recent Arabian Sea Socotra FEU-1001605 | identified by M. Hesemann Quaternary Holocene recent Arabian Sea Socotra FEU-1001606 | identified by M. Hesemann Quaternary Holocene recent Australia and off beaches of Australia FEU-1019360 | identified by M. Hesemann Quaternary Holocene recent Gulf of Mexico North Padre Island FEU-1009137 | |||||