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First pterosaur tracks from Brazil.

Mauro B S Lacerda1, Marcelo A Fernandes1, Giuseppe Leonardi2,3

  • 1Universidade Federal de São Carlos (UFSCar), Departamento de Ecologia e Biologia Evolutiva (DEBE), Centro de Ciências Biológicas e da Saúde (CCBS), Avenida Washington Luís, Km 235, 13565-905 São Carlos, SP, Brazil.

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The first pterosaur fossil tracks from Brazil

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Area of Science:

  • Paleontology
  • Ichnology

Background:

  • The Botucatu Formation in Brazil's Paraná Basin preserves Lower Cretaceous desert environments.
  • Known tetrapod tracks include dinosaurs, lizards, and mammals.

Purpose of the Study:

  • To report the first occurrence of pterosaur tracks in Brazil.
  • To classify these tracks and enhance understanding of the Botucatu Formation's ichnological diversity.

Main Methods:

  • Analysis of isolated, well-preserved tridactyl tracks from the Ouro ichnosite.
  • Morphological comparison of manus and pes imprints with known ichnotaxa.

Main Results:

  • Identified pterosaur tracks classified as Pteraichnus isp.
  • Manus tracks are digitigrade and rhombic; pes tracks are plantigrade with elongated metatarsals.
  • Distinctive features differentiate these tracks from dinosaurian tridactyl tracks.

Conclusions:

  • This discovery represents the first pterosaur tracks found in Brazil.
  • Adds to the known ichnological diversity of the Botucatu Formation and Brazilian paleontological heritage.