Author: SCHOPF, T.J.M.
Title: Conodonts of the Trenton Group (Ordovician) in New York, Southern Ontario, and Quebec.
Description: 1966. NY St. Museum Bull. 405; 105 pp. 16 fig. 6 plts. 7 fold. tables in backpocket. Orig. wrps. with libr. stamp, very good.

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