Author: Greiner, H., 1957.:
Title: "Spirifer disjunctus": its evolution and paleoecology in the Catskill Delta. [Peabody Mus. Nat. Hist. Bull., 11.]
Description: New Haven, Conn. Large 8vo. Pp. iv,75,[15], 13 plates, 1 fold. map, 4 figs., bibliogr., index. Orig. cloth. - Upper Devonian-Lower Wississippian, in New York and Pennsylvania.

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