模板:Shelldoc 420090224001
Grabau, Amadeus W.; King, Sohtsu C. Shells of Peitaiho 2 2nd ed. revised and enlarged. Peking Laboratory of Natural history. 1928: 239–243 （英語）.
Grabau, Amadeus W.; King, Sohtsu C. Shells of Peitaiho 2 2nd ed. revised and enlarged. Peking Laboratory of Natural history. 1928: 239–243 （英語）.