Beu 1988. Taxonomy of gastropods of the families Ranellidae (=Cymatiidae) and Bursidae. Part 5. Early history of the families, with four new genera and recognition of the family Personidae. Grant-Mackie, J.A.; Masuda, K.; Mori, K.; Ogasawara, K.[Eds]. Professor Tamio Kotaka commemorative volume on molluscan paleontology., Saito Ho-on Kai, The Saito Gratitude Foundation, Sendai, Japan, 1988: i-xi, 1-582. Chapter pagination: 69-105