59 metric tonnes · All Facts

59 metric tonnes
Dreadnoughtus was estimated at about 59 metric tonnes (~65 short tons) when described — and the specimen may not have been fully grown.
SrcScientific Reports (Lacovara et al., 2014)

Next evidence →air-filled diverticulaSauropod neck vertebrae were riddled with air-filled diverticula that lightened the skeleton — the same pneumatic design birds use.

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