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160-Million-Year-Old Footprints Reveal Pterosaurs’ Transition to Terrestrial Life

New research links fossilized tracks to three pterosaur clades, shedding light on their ground-dwelling behaviors and ecological adaptations.

A skeletal reconstruction of a comb-jawed pterosaur walking across an ancient mudflat.
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Overview

  • University of Leicester researchers used 3D modeling to match fossilized footprints to specific pterosaur groups, confirming their mid-Jurassic shift to terrestrial locomotion.
  • The study identifies three distinct footprint types linked to neoazhdarchians, ctenochasmatoids, and dsungaripterids, illuminating their varied lifestyles and habitats.
  • Neoazhdarchian tracks, including those of Quetzalcoatlus, show these large pterosaurs were frequent ground dwellers in both coastal and inland environments until their extinction 66 million years ago.
  • Ctenochasmatoid footprints, found in coastal deposits, suggest these needle-toothed pterosaurs waded in shallow waters, with their abundance indicating they were more common than body fossils suggest.
  • Dsungaripterid footprints, discovered alongside skeletons, reveal specialized shell-crushing feeding behaviors, providing new insights into their ecological roles.