Clip | Raising the Dinosaur Giant - The 500-Pound Dinosaur Heart

Titanosaurs were the world’s largest dinosaurs, weighing as much as 100 tons by some estimates. In order to push blood around such massive bodies, they needed an enormous heart. A yet-to-be named species, found in the deserts of Agentina, may have had a heart that weighed over 500 pounds and was six feet around.

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Its heart must have been immense.

From our new, detailed knowledge of the skeleton, John Hutchinson has calculated that it was more than six feet in circumference.

It probably weighed 230 kilos and would have had to shift 90 liters of blood with a single beat.

There's one.

And it would have had to repeat that beat every five seconds.

There it goes again.

Weighing more than three grown men, it would have been extraordinarily powerful.