Ichnology provides detailed information on the environmental parameters involved during deposition, serving as a basis for paleoenvironmental interpretations. To this end, ichnological analyses focus on the behavioral aspects represented by ichnoassociations, providing details of the interaction between organisms and the abiotic environment. Ichnological studies in the deposits of the Furnas Formation have been recorded since the early twentieth century, mentioning the presence of "worm tubes". The overall lack of body fossils and microfossils and the lithological uniformity have led to extensive dis-cussions about its depositional origin. The palaeodepositional scenario of the Furnas Formation has been highlighted by the recognition of trace fossils, proposing a shallow marine setting for the unit. This review study focuses on examining the evolution of ichnological knowledge and its application to paleoenvironmental characterization in the deposits of the Furnas Formation in the Parecis and Paraná basins, Brazil, based on a review of the studies for the unit.
