150 million-year-old pterosaur cold case has finally been solved

One hundred and fifty million years ago, the Solnhofen Limestones of Germany were covered in small islands and warm saltwater lagoons. Coral reefs flourished with crinoids, sponges, jellyfish, and crustaceans; Dragonflies buzzed above the water as small reptiles sunned themselves at the water’s edge. Pterosaurs and Archaeopteryx took to the skies, but there was trouble in this Jurassic paradise: Tropical storms would turn it into a pterosaur graveyard.

What paleontologist Rab Smyth found in this graveyard finally revealed why so many fledgling pterosaurs had succumbed to the storm. Smyth, a researcher at the Center for Paleobiology and Biosphere Evolution at the University of Leicester, unearthed two Pterodactylus antiquus hatchlings, and their bones showed exactly how they had succumbed to storm winds. The wings of both specimens (ironically named Lucky I and Lucky II) revealed clean, slanted humerus fractures that suggested they had been twisted in the storm. Unable to fly, they drowned and were rapidly buried in the lagoon depths.

“Our results show that most pterosaurs are preserved predominantly through catastrophic events, often reflecting mass mortality episodes,” Smyth and his research team said in a study he led, recently published in Current Biology.

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