•The notion that there
is a general connection between seriated bone harpoons and Nilo-Saharan goes
back to the Aqualithic (1974, 1977) of John Sutton (which however, also
co-associates ‘wavy-line’ pottery)
•However, none of the
geomorphological data for a green Sahara, nor our current understanding of the
internal structure of the phylum was then available
•The dispersal of the
Western branches of Nilo-Saharan was strongly associated with the opening up
of new aquatic resource opportunities
•A east-west and
south-north movement at this period can be tracked through;
•finds of:
qbone harpoons
qfossils
qrock-paintings of
aquatic species such as hippos in what are now arid regions.