News of the WeekPaleontology

Doubts Raised About Dinosaur Heart

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Science  02 Feb 2001:
Vol. 291, Issue 5505, pp. 811
DOI: 10.1126/science.291.5505.811

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Last April, a team of scientists unveiled a fossilized dinosaur heart--evidence suggesting that dinosaurs were indeed warm-blooded. But in Science Online this week (see Technical Comments), two paleontologists and a geologist argue that the grapefruit-sized structure is no heart at all but only a deceptive lump of minerals.