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Artefacts offer Pacific shark species absence

dusky sharks spot-tail sharks teeth artefacts species

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#1    Still Waters

Still Waters

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Posted 04 April 2013 - 12:27 PM

Nineteenth Century tools made from sharks' teeth suggest that two species of shark used to populate the Central Pacific but are no longer present.

Using artefacts from museums, a team of US researchers found that spot-tail and dusky sharks used to inhabit the reefs surrounding the Gilbert Islands.

The unusual historical data would help evaluate the success of ecological conservation measures, they added.

http://www.bbc.co.uk...onment-22005634

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