Earliest known Gondwanan bird tracks: Wonthaggi Formation (Early Cretaceous), Victoria, AustraliaDOI: info:10.1371/journal.pone.0293308v. 18No. 11
Martin, Anthony J., Lowery, Melissa, Hall, Michael, Vickers-Rich, Patricia, Rich, Thomas H., Serrano-Brañas, Claudia I., and Swinkels, Peter. 2023. "Earliest known Gondwanan bird tracks: Wonthaggi Formation (Early Cretaceous), Victoria, Australia." PLOS ONE, 18, (11). https://doi.org/10.1371/journal.pone.0293308.