![]() ![]() Findings indicated that the current age-reading methodology is not suitable for estimating the age of C. taurus individuals in the present study reached at least 40 years for females and 34 years for males. Age was also underestimated for adult sharks from the SIO by 14–18 years. Results from the WNA validated vertebral age estimates up to 12 years, but indicated that ages of large adult sharks were underestimated by 11–12 years. Carbon-14 results were plotted relative to YOF for comparison with regional Δ 14C reference chronologies to assess the accuracy of age estimates. Visual counts of vertebral growth bands were used to assign age and estimate year of formation (YOF) for sampled growth bands in eight sharks from the WNA and two sharks from the SIO. Bomb radiocarbon analysis of vertebral growth bands was used to validate lifespan for sand tiger sharks ( Carcharias taurus) from the western North Atlantic (WNA) and southwestern Indian Oceans (SIO). ![]()
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