George Chaloupka

George Jiří Chaloupka OAM, FAHA (6 September 1932 – 18 October 2011) was an expert on Indigenous Australian rock art. He identified and documented thousands of rock art sites, and was a passionate advocate for Aboriginal Australian art, as longest continuing art tradition in the world. He is especially known for the much-debated assignation of a four-phase style sequence to rock art in Arnhem Land, and the term "Dynamic Figures", which he assigned to rock art described by him in Mirrar country of western Arnhem Land. Provided by Wikipedia