The fourth radiocarbon list contains many new and important dates. Only isolated readings are still available from West Africa, but some later Iron Age sites have recently been dated. The first samples for the Kenya Highlands date food production in that region to the first millennium b.c., while important dates from Uganda confirm the traditional datings of Bigo and Bweyerore. Samples from Kilwa on the Tanzanian coast are somewhat at variance with other dating evidence.
Dates for the Angola Iron Age range between a.d. 760 and the fifteenth century, while the Leopard's Kopje industry of Rhodesia has been dated for the first time.
The list is completed with many isolated dates from all parts of the subcontinent.