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142. Knowlton, F. H. Silicified wood of Arizona. Proc. U. S. Nat. Mas., p. 1. 



1888. Wasbin^tou. 



143. Lapworth, Chahles. Fossils from Kicking Horse Pass, Manitoba. Science, vol. 



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144. On the discovery of the Olenellus fauna in the Lower Cambrian rocks of 



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145. Preliminary report on some Graptolites from tbe Lower Pala-ozoic rocks 



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140. Le Contk, Joseph. The Flora of the Coast Islands of California in relation to 

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147. Leidy, Joseph. Fossil bones from Florida. Proc. Acad. Nat. Sci. Philad., part 



III, p. 309. 1887. Philadelphia. 



148. Lesquereux, Leo. On the character and distribution of Pala>ozoic plants. 



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140. Note on Prof. L. F. Ward's Synopsis of the Flora of the Laramie group. 



Amer. Jour. Sci., vol. xxxiv, pp. 487-486. December, 1887. New Haven. 



150. Recent determinations of fossil plants from Kentucky, Louisiana, Oregon, 



California, Alaska, Greenland, etc., with descriiitious of new species. Proc. 

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151. List of fossil plants collected by Mr. I. C. Russell, at Black Creek, near 



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152. Specimens of fossil plants collected at Golden, Colorado, 1883, for the 



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153. Lydekkek, R. British Museum catalogue of fossil reptilia, and papers on the 



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154. Marcou, Jules. Pala-ontologic and stratigraphic "principles" of the adver- 



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155. The Taconic of Georgia, and the report on the geology of Vermont. Mem. 



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156. Marcou, J. B. Review of the progress of North American Paheontology for the 



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157. Review of the ]nogros8 of North American Paheontology for the year 1887. 



Amer. Nat., vol. xxii, pp. 679-691. 1888. Philadelphia. 



158. Margerie, Emm. de. Les Progres do la Geologic. Congri-s Bibliograjjhiqno 



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159. Marsh, O. C. American Jurassic Mammals. Amer. Journ. Sci., vol. xxxiii, 



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160. American Jurassic Mammals. Geol. Mag. (new ser.), dec. in, vol. iv, pp. 



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161. Notice of new Fo.ssil Mammals. Amer. Journ. Sci., vol. xxxi\ . ]>p. 323- 



331. October, 1887. New Haven. 



