Revisiting the southernmost occurrence of Brasilichnium elusivum Leonardi, 1981 with comments on the tetrapod track record of eolian environments

Mammalian lineage is deep rooted in Mesozoic, with several taxa and ichnotaxa described worldwide. One of the most prolific mammaliaform ichnospecies Brasilichnium elusivum, which extremely abundant Lower Cretaceous Botucatu Formation Brazilian Paraná Basin, as well other Mesozoic ichnofaunas North America Africa. In this contribution, we revisited proposed southernmost occurrence B. elusivum using both classical photogrammetric (3D digitization) approaches. The flagstone containing studied material was found ex situ, a sidewalk at Santa Cruz do Sul Municipality (the Rio Grande State, Brazil), results performed analysis showed that tracks cannot be assigned to any ichnotaxon. Lastly, some significant issues related ichnological research situ track-bearing flagstones large eolian deposits are discussed. Keywords: Early Cretaceous, Formation, mesozoic mammals, South America, vertebrate ichnology.