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Storms Likely Doomed Baby Pterosaurs at Solnhofen, Study Finds

The conclusion rests on matching mid‑flight humerus fractures in two hatchlings nicknamed Lucky and Lucky II.

An artist’s impression of a tiny Pterodactylus hatchling struggling against a raging tropical storm about 150 million years ago during the Jurassic Period, inspired by fossil discoveries in Germany. Pterodactylus is a genus of pterosaur, the flying reptiles that lived during the age of dinosaurs. The image was released by the University of Leicester on September 5, 2025. Rudolf Hima/Handout via REUTERS

Overview

  • The peer‑reviewed research in Current Biology reexamines two juvenile Pterodactylus fossils from Bavaria and identifies identical diagonal breaks in the upper arm bone consistent with violent winds.
  • Investigators infer the hatchlings were blown from the air, inhaled water, sank quickly, and were rapidly buried in storm beds that preserved delicate anatomy under oxygen‑poor conditions.
  • The study argues this storm‑driven mortality helps explain why Solnhofen holds many small juveniles but few intact adults, reframing a long‑standing fossil record puzzle.
  • The tiny fossils, only days to weeks old with wingspans under about 20 centimeters, indicate that pterosaurs were capable of powered flight shortly after hatching.
  • Unearthed years earlier at separate localities and kept in different museum collections, the specimens provided rare, high‑quality evidence of trauma and taphonomy in Jurassic pterosaurs.