Coastal Developmental Stage Fishing and Hunting Equipment.
Left to right: triangular ground-slate point, possibly the cutting edge of a toggling harpoon; bilaterally barbed antler harpoon head for fishing or sea-mammal hunting (5,500-3,500 years old); unilaterally barbed antler harpoon head (2,500-1,500 years old); (top) single-piece toggling harpoon, with slot for insertion of a shell or stone cutting blade (3,500-2,500 years old); (middle) two bone "bipoints," splinters of bone sharpened at both ends, used as barbs on fishhooks or other fishing implements (last 1,500 years); composite antler toggling harpoon, showing two halves or "Valves" side by side (last 1,500 years) in use these would have been lashed together, with a shell or stone cutting blade in the slot formed between them, and the harpoon shaft fitted into the base; unilaterally barbed bone fish-spear; small side-notched ground-slate arrowhead; flaked stemmed spearhead or knife. The bilaterally barbed harpoon is from Namu; all other artifacts are from various south-coast sites. Side-notched slate arrowhead is 3.5 cm long.
Courtesy: Simon Fraser University Museum of Archaeology and Ethnology