Shell money most valued by the Native American tribes of the Pacific Coast from Alaska to northwest California was "Dentalium shell", a species of long narrow marine shelled mollusk, a tusk shell or scaphopod. The tusk shell is naturally open at both ends, and can easily be strung on a thread. This shell money was valued by its length rather than the exact number of shells; the "ligua", the highest denomination in their currency, was a length of about 6 inches. Farther south, in central California and southern California, the shell of the olive snail "Olivella biplicata" was used to make beads
Two Row Wampum Treaty is no expectation that early belts should have survived had they in fact been exchanged in the early seventeenth century. In any event, by 1870 the image of the two-row wampum belt had come to symbolize for the Haudenosaunee their ongoing treaty and "kaswentha" relationship with the Dutch crown. Diana Muir Appelbaum has written that: Indeed, no documentary evidence (including wampum, which is very fragile) survive from the original treaty negotiations of 1613. But, as Parmenter points out: Onondaga leaders state that the oral tradition which accompanies the wampum belts is evidence that an agreement was made in 1613. Andy