A large, fossilised crocodilian metatarsal has been recovered from the Pliocene Bluff Downs Local Fauna exhibiting proliferative bone growth consistent with an episode of osteoperiostitis, possibly resulting from trauma. The nature and location of this trauma suggests that it may have occurred as a result of intraspecific aggression between rival animals. Three crocodilian genera have been recovered from the Bluff Downs Fauna,Crocodylus, QuinkanaandPallimnarchus. The metatarsal does not conform toCrocodylus porosusand therefore most probably represents one of the other two known crocodilian taxa. The nature of the injury suggests that it occurred in water and it may belong to the now extinct Plio-PleistocenePallimnarchusrather thanQuinkana babarrawhich is interpreted as being predominantly terrestrial.