Taxonomy and distribution of chasmopine trilobites. 1980. Evolutionary trends and their functional significance in chasmopine trilobites. 1980. Heteromorph ammonites from the Albian of South Australia. 1980. Heterochrony and phylogenetic trends. 1982. Progenesis in trilobites. 1983. The earliest Tegulorhynchia (Brachiopoda: Rhynchonellida) and its evolutionary significance. 1983. The role of heterochrony in the evolution of Cambrian trilobites. 1986.