Author: WESTERMANN, G.E.G.
Title: Succession and variation of Monotis and the associated fauna in the Norian Pine River Bridge section. British Columbia (Triassic Pelecypoda).
Description: 1962. Journal of Paleontology 32-4; pp. 745-792, 19 fig. 7 plts. h.t. Orig. extract, new plain wrps. as such very good.

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