In 1945, Campbell entered his second year of his study, attending lectures given by Dr Dorothy Hill, who had returned from World War II service in the WRANS.
[1] In 1962, Campbell took up a position as senior lecturer in geology at the Australian National University, Canberra at the request of David Brown in 1962.
He was a Fulbright Fellow at Harvard University in 1965, studying trilobites[1] with Professor Whittington and later Devonian lungfish.
Campbell was a visiting scientist at the Field Museum of Natural History, Chicago, studying the histology of teeth in 1981.
[5] Alone and in collaboration with others, in particular Dick Barwick, Ken Campbell published more than 40 papers on the evolution, palaeoecology and phylogenetics of fossil lungfish.