Patagotitan mayorum, a titanosaur sauropod discovered in Argentina and described in 2014, is estimated at 69-77 tonnes based on limb-bone measurements — the best-supported estimate for the largest land animal known to have existed, though the estimate carries real uncertainty since no complete skeleton has been found and mass is inferred from bone dimensions using standard sauropod scaling models.
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Patagotitan mayorum, a titanosaur sauropod discovered in Argentina and described in 2014, is estimated at 69-77 tonnes based on limb-bone measurements — the best-supported estimate for the largest land animal known to have existed, though the estimate carries real uncertainty since no complete skeleton has been found and mass is inferred from bone dimensions using standard sauropod scaling models.
The greatest estimated body mass of any land animal known from the fossil record, based on the most complete skeletal remains discovered.
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1 accepted Claim, with 1 linked evidence records.
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Limits Registry. LR-PATAGOTITAN-LARGEST-DINOSAUR. Largest land animal ever. 2026.