. Annals of the New York Academy of Sciences. Science. 138 ANNALS NEW YORK ACADEMY OF SCIENCES Powell, p. 110. U. S. Geological and Geographical Survey of the Terri- tories, 1876. Unio nucaJis Meek and , Phila. Acad. Nat. Sci., Proc. 1858, •p. 52. U7iio ivillistoni Logan, The Stratigraphy and Invertebrate Faunas of the Jurassic Formation in the Freezeout Hills of Wyoming. Kans. Univ. Quart., vol. ix, p. 133, pi. 31, fig. 10, Fig. 92.—The same slide and field as fig. 91, with crossed nicols. This shows the banded feldspars and the granular quartz which has replaced the volcanic as
. Annals of the New York Academy of Sciences. Science. 138 ANNALS NEW YORK ACADEMY OF SCIENCES Powell, p. 110. U. S. Geological and Geographical Survey of the Terri- tories, 1876. Unio nucaJis Meek and , Phila. Acad. Nat. Sci., Proc. 1858, •p. 52. U7iio ivillistoni Logan, The Stratigraphy and Invertebrate Faunas of the Jurassic Formation in the Freezeout Hills of Wyoming. Kans. Univ. Quart., vol. ix, p. 133, pi. 31, fig. 10, Fig. 92.—The same slide and field as fig. 91, with crossed nicols. This shows the banded feldspars and the granular quartz which has replaced the volcanic ash. Unio Imighfi Logan, Tlie Stratigraphy and Invertebrate Faunas of the Jurassic Formation in the Freezeout Hills of Wyoming. Kans. Univ. vol. ix, p. 134, pi. 31, figs. 7, 9, 1900. Unio haileyi Logan, The Stratigraphy and Invertebrate Faunas of the Jurassic Formation in the Freezeout Hills of Wyoming. Kans. Univ. Quart., vol. ix, p. 134, pi. 31, figs. 4, 6, 8, 11, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York Academy of Sciences. New York, New York Academy of Sciences
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