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Yang | 
1987 | 
Ceratitida. In: Yang Zunyi, Yin Hongfu, Wu Shunbao, Yang Fengqing, Ding Meihua & Xu Guirong: Permian-Triassic Boundary. Stratigraphy and Fauna of South China.	 
Geological Memoirs (2) 6: 262-271, 15 fig. (Geological Publishing House), Beijing.	 
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