Conway Morris, S., 1977, Fossil priapulid worms, 20 of Special Papers in Palaeontology: London, Palaeontological Association.
Conway Morris, S., and Robinson, R. A., 1986, Middle Cambrian priapulids and other soft-bodied fossils from Utah and Spain: University of Kansas Paleontological Contributions; Paper 117.
Sun Wei-guo, and Hou Xian-guang, 1987, Early Cambrian worms from Chengjiang, Yunnan, China: Moatianshania Gen. Nov. [in Chinese]: Acta Palaeontologica Sinica, v. 26, p. 299-305.
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