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Longevity of  Rhizoprionodon terraenovae  and  Carcharhinus acronotus  in the western North Atlantic Ocean was examined using direct age estimates from vertebral sections and tag-recapture data. Time-at-liberty ranged from 7.7-14.0 years (mean =10.1) for  R. terraenovae  and 10.9-12.8 years (mean =11.9) for  C. acronotus . Maximum estimated longevity was determined to be 19.8 years through tag-recapture data and 18.5 years from direct age estimates for  R. terraenovae  and 22.8 years through tag-recapture data and 20.5 years through direct age estimates for  C. acronotus . These longevity estimates represent a large increase over previous estimates and may have significant effects on analyses that depend on longevity including lifetime fecundity, mortality rates, demographic analyses and stock assessments.

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Longevity of Atlantic Sharpnose Sharks Rhizoprionodon terraenovae and Blacknose Sharks Carcharhinus acronotus in the western North Atlantic Ocean based on tag-recapture data and direct age estimates