Trace fossils on penguin bones from the Miocene of Chubut, southern Argentina. Alcheringa, 34(4), 433–454
DOI: 10.1080/03115511003793470
Megascyliorhinus trelewensis (Neoselachii) in the ?Middle-Upper Miocene of Paraná, Central eastern Argentina. INSUGEO, Miscelánea, 17: 41–48