Tiny bones locked in stone for millions of years have finally told their sad story.

The 150-million-year-old fossils belong to a pair of pterosaur hatchlings, both of whom appear to have perished in a spectacularly violent weather event, paleontologists have now discovered.

What makes this discovery remarkable isn't just that researchers were able to reconstruct the way they died; it's also that such delicate bones were preserved at all.

Related: Scientists Can Finally Reveal The Secret of How Pterosaurs Took Flight

"Pterosaurs had incredibly lightweight skeletons. Hollow, thin-walled bones are ideal for flight but terrible for fossilization," says paleontologist Rab Smyth of the University of Leicester in the UK.

"The odds of preserving one are already slim and finding a fossil

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