When archaeologists had been digging a new library website at Valencina de la Concepción in southwest Spain in 2018, they uncovered an uncommon merchandise: half of a massive sperm-whale tooth mendacity in a 4,000-year-old pit.
Because nothing prefer it had ever been reported from Copper-Age Iberia, the group ran a bevy of assessments to study the place it may have come from and the way it ended up in the pit.
Thus, based mostly on proof of marine boring and beach-root harm, the group unravelled the tooth’s lengthy journey from a sperm whale’s mouth and to a settlement deep inland, providing en route a timeline of coastal processes 4 millennia in the past.
Their findings had been not too long ago revealed in PLoS One.
The group shot overlapping photographs with a digicam and processed them to construct a detailed 3D mannequin that may very well be rotated on a display, permitting tiny marks to be examined with out dealing with the fragile specimen.
Then group members used a digital microscope to reveal floor scratches, drill holes, and organic bores smaller than a millimetre large.
The group additionally unraveled 4 sorts of small tunnels and grooves: made by sponges, marine worms, grazing snails, and burrowing barnacles. They additionally mapped chunk marks left behind by sharks.
The form of the root — thick with a single level and lightweight enamel — matched up to date sperm whales. The authentic tooth was estimated to have been 20-25 cm lengthy, which means the whale was an grownup.
Radiocarbon relationship of the different animal bones and pottery in the pit revealed it was dug in about 2500-2400 BC.
In this manner, the group reported that after the whale died, the tooth stayed on the seabed lengthy sufficient for sponges, worms, snails and barnacles to bore into it and for sharks to scavenge the carcass. Later, water currents rolled it round and partially buried it in sand.
Someday, a storm or very excessive tide lastly tossed the tooth onto a close by shore. While buried in seaside sand, plant roots etched new channels and a limestone crust shaped on its floor.
Humans of the Copper Age then picked it up, most likely as a result of it appeared unique and helpful, and pressed a number of chisels or awls into the break edge to break up items off items, most likely to use in ornaments.
Eventually, the folks positioned the trimmed tooth in a pit about a metre large and deep together with damaged dishes, stone instruments, and animal bones. The archaeologists didn’t discover any human bones inside and thus concluded the pit to be a “structured deposition”, meant to take away valuable objects from on a regular basis use.
This is the solely sperm-whale tooth present in Copper-Age Spain and solely the second in the Western Mediterranean of comparable date. Its discovery thus widened the listing of uncommon and prized supplies — together with elephant ivory, ostrich eggshells, and rock crystals — circulating at Valencina right now.
The burial additionally confirmed that coastal objects, even from gigantic sea creatures by no means seen alive inland, held symbolic energy for communities engaged predominantly in farming.
Published – June 16, 2025 04:00 pm IST
