. Smithsonian miscellaneous collections . PSEUDOMARTINIA AND SPIRIFERELLA (SEE EXPLANATION OF PLATES AT END OF TEXT.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 119. NO. 2. PL. 20. Spiriferella, Hustedia, and Neospirifer (see explanation of plates at end of text.) MITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 119. NO. 2. PL. 21 •ftr

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Keywords: ., bookcentury1800, bookdecade1860, bookidsmiths, booksubjectscience