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Jurassic Storms Shattered Baby Pterosaurs’ Wings, Study Finds

UV imaging with trauma analysis ties identical wing fractures to violent gusts that skewed the Solnhofen fossil record.

Overview

  • University of Leicester researchers report in Current Biology (September 5) that two neonatal Pterodactylus, nicknamed Lucky and Lucky II, died during violent tropical storms.
  • Both hatchlings show clean, diagonal breaks to the humerus consistent with twisting forces from extreme winds rather than impact with hard surfaces.
  • The storms likely drove the young pterosaurs into a lagoon where they drowned, and rapid burial in fine limestone preserved their articulated skeletons in exceptional detail.
  • The team concludes that storm-driven juvenile mortality helps explain the abundance of small pterosaur fossils at Solnhofen and the scarcity and fragmentary nature of adult remains.
  • UV-stimulated fluorescence revealed otherwise hidden damage patterns, and the work, led by Rab Smyth with co-authors Rachel Belben, Richard Thomas and David M. Unwin, acknowledges funding from NERC via the CENTA Doctoral Training Partnership.