Tetrapod tracks in Permo–Triassic eolian beds of southern Brazil (Paraná Basin)

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ID: 103945
2018
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Abstract
Tetrapod tracks in eolianites are widespread in the fossil record since the late Paleozoic. Among these ichnofaunas, the ichnogenus Chelichnus is the most representative of the Permian tetrapod ichnological record of eolian deposits of Europe, North America and South America, where the Chelichnus Ichnofacies often occurs. In this contribution, we describe five sets of tracks (one of which is preserved in cross-section), representing the first occurrence of Dicynodontipus and Chelichnus in the “Pirambóia Formation” of southern Brazil. This unit represents a humid desert in southwestern Pangea and its lower and upper contacts lead us to consider its age as Lopingian–Induan. The five sets of tracks studied were compared with several ichnotaxa and body fossils with appendicular elements preserved, allowing us to attribute these tracks to dicynodonts and other indeterminate therapsids. Even though the “Pirambóia Formation” track record is sparse and sub-optimally preserved, it is an important key to better understand the occupation of arid environments by tetrapods across the Permo–Triassic boundary.
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francischini2018tetrapodpeerj Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Francischini, Heitor;Dentzien-Dias, Paula;Lucas, Spencer G.;Schultz, Cesar L.;
Journal PeerJ
Year 2018
DOI
DOI not found
URL
https://peerj.com/articles/4764.pdf
Keywords
chemistry Biology (General) Medicine evolution

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