 identified by M. Hesemann Quaternary Holocene recent off West Africa Mauritanian Shelf |
 identified by M. Hesemann Quaternary Holocene recent off West Africa Mauritanian Shelf |
 identified by M. Hesemann Quaternary Holocene recent off West Africa Mauritanian Shelf |
 identified by M. Hesemann Quaternary Holocene recent off West Africa Mauritanian Shelf |
 identified by M. Hesemann Quaternary Holocene recent off West Africa Mauritanian Shelf |