sentences:  "D. esculenta" is believed to have been introduced by the Lapita culture into New Guinea, along with agricultural innovations like wet cultivation.Traces of "D. esculenta" (along with "D. alata", "D. bulbifera", "D. nummularia" and "D. pentaphylla") yams have also been identified from the Mé Auré Cave site in Moindou, New Caledonia, dated to around 2,700 to 1,800 BP.Remains of "D. esculenta" have also been recovered from archaeological sites in Guam, dated to around 1031 CE.