The book The Geological Story Briefly Told was written by author James Dwight Dana Here you can read free online of The Geological Story Briefly Told book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Geological Story Briefly Told a good or bad book?
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The region is represented as a great marshy plain with lakes. The lakes of the Carboniferous era probably had their many floating islands of vegetation, carrying large groves like the floating islands of some lakes iu India. CARBONIC EKA. 193 A portion of one of the Ferns is shown in Fig. 208, and of another in Fig. 209. Fig. 210 represents one of the Equiseta, a species of Calamites (page 174); plants with jointed stems that grew often to a height of 20 feet, and Fiu. 208. w* Fern. Sphcnopteri...s Gravcnhorstii. sometimes were a foot in diameter, very unlike the little Horsetails of modern time. Fir;. 209. Wwlm^ Fern. Neuropteris hirsuta. The Lycopods, of the tribe of Lepidodendrids, had the aspect of Pines and Spruces, and were 40 to 80 feet or more in height. On some, the slender pine-like leaves were DANA'S GEOL. STORY 13 194 PALEOZOIC TIME. a foot or more long. Figs. 211, 212 show the scars of the outer surface of two of the Lepidodendrids arranged, as FIG. 210. Equisetum. Calamites canna'formis.
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