identified by scientist Quaternary Holocene recent Celtic Seas unknown FEU-1003026 | identified by scientist Quaternary Holocene recent Celtic Seas Porcupine Station 23 FEU-1002671 | identified by M. Hesemann Quaternary Holocene recent off West Africa Mauritanian Slope FEU-1018231 | identified by M. Hesemann Quaternary Holocene recent Caribbean Sea and Bahamas West Florida Shelf FEU-1025190 |