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Hall, James; 1811-1898 / Geological survey of Wisconsin, 1859-1863. Palaeontology. Part third
(1871)

Plate XII,   pp. [unnumbered]-Plate XII PDF (819.6 KB)



                               PLATE XII-Ountinued.
                         GOMPHOCYSTITES GLANS, HALL.
                                       Page 352.
FIG. 14. Lateral view of a cast of a specimen, which shows the general form,
the position of the
            central opening, grooves of the spiral appendages of the dome,
and impressions of
            some of the plates of the dome and body.
                         GoxPHocYsrlTEs TENAX, HALL.
                                       Page 352.
FIG. 15, Enlarged view on a specimen from Lockport, New York, which preserves
the plates of
           the upper part of the body and dome, showing their spiral arrangement
and nodose
           character.


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