. Elements of geology : a text-book for colleges and for the general reader. Geology. JURA-TRIAS IN AMERICA. 459 On the slopes of the Black Hills and on the South Platte undoubted Jurassic fossils occur, indicating an open sea. In New Mexico New- berry found impressions of- plants, indicating the same horizon as in. 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 LeConte, Joseph, 1823-1901. New York : D. Appleton and Co.

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1892