Oldest Dinosaur Red Blood Cells Found in 115-Million-Year-Old Fossil

Researchers identified fossilized red blood cells and collagen amino acids in an Aratasaurus leg bone from Brazil, challenging previous limits on molecular preservation.

4 publishers · 4 articles · first seen 2 Nov 2026 · updated 5d ago

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4 publishers have covered this in 4 articles since 2 Nov 2026. Latest News from Science Magazine published first, on 2 November at 03:50 UTC; Phys.org - latest science and technology news stories followed 15h 10m later. The most recent article, from The Guardian, appeared on 2 November at 20:00 UTC.

Outlets reporting it: Latest News from Science Magazine (major outlet), The Guardian (major outlet), Phys.org - latest science and technology news stories, New Scientist.

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In this story

Aratasaurus
Curtin University
Brazil

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