Complex sentence: In 1966 he attended Denver University where he received a BA in Anthropology and then went on to do his MA and PhD at the University of Illinois in 1968 and 1974 respectively.
Split into simpler sentences: In 1966 he attended Denver University where he received a BA in Anthropology. He then went on to do his MA and PhD at the University of Illinois in 1968 and 1974 respectively.