The discovery of Devonian tetrapod tracks is rare but significant. They push the appearance of tetrapods further back in time. Of the four confirmed finds in Laurussia and Gondwana, the footprints from Zachełmie (Poland) are the earliest. ...
The discovery of very early tetrapod tracks disrupts previously established hypotheses and forces a reconsideration of the evolutionary timeline. These tracks are older than the fossil remains of the presumed ancestors of tetrapods—elpistostegids. ...