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State of the Planet

State of the Planet

Did the World’s Best-Preserved Dinosaurs Really Die in ‘Pompeii’ Events?

State of the Planet
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A new study uses newly sophisticated technology to date the fossils to a compact period of less than 93,000 years when nothing particular happened.

The leading hypothesis up to now has been sudden burial by volcanism, perhaps like the waves of hot ash from Mt. Vesuvius .

Instead, creatures were preserved by more mundane events including collapses of burrows and rainy periods that built up sediments that buried the dead in.

Fossil remains characteristically are curled in so-called pugilistic positions, torturously doubled over and with limbs severely drawn up, as blood boiled and bodies crumpled in the explosive heat.

Evidence points instead to sudden burrow collapses, say the researchers.

The researchers interpret this to mean there was enough oxygen around for a while for bacteria or insects to degrade at least the animals’ skin and organs.