[Cambrian Trilobita.]. Nanking lnstitute of Geology Palaeontology, [Ed]. IA handbook of the stratigraphy and palaeontology in southwest China] l-454, figs l-66, pls 1-202., Science Press, Academia Sinica, Peking., 1974: 49-56. Chapter pagination: 49-56. 89 [Zoological Record Volume 111]