Author: Jun-yuan C., Si-ping T. & Ting-en C.,
Title: Late Cambrian cephalopods of North China - Plectronocerida, Protactinocerida (ord
Description: 1979. nov.) and Yanhecerida (ord. nov.). In 8vo, offp., pp. 28 with 4 pls. and 20 figs. Offprint from Acta Pal. Sinica, 18(1). Inscribed and signed by the first author. In Chinese with wide English abstract. Punch holed

Keywords: shells fossil cephalopods paleontology geology


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