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This work constitutes a bibliographic index of specific names within four classes of Mollusca. The index is limited to those names occurring in the North American paleontologic literature for specimens of Mississippian, Pennsylvanian, and Permian age. Each section h.:cS a separate bibliography. The pertinent entries of Stuart Weller's "A bibliographic index of North American Carboniferous invertebrates" are included in this index. So fer as is known, the index is comprehensive to December 31, 1966.

A bibliographic index of North American late Paleozoic Hyolitha, Amphineura, Scaphopoda, and Gastropoda