Author: SHIRLEY, J.
Title: A redescription of the known British Silurian species of Calymene (s.l.) /&/ A redescription of the known British Ordovician species of Calymene (s.l.).
Description: 1931-1933. Mem. Proc. Manchester Lit. Phil. Soc. LXXV & LXXVII; pp. 51-67 & 1-35, 1+2 plts. h.t. Orig. extracts, stapled, as such very good.

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