. Elements of geology : a text-book for colleges and for the general reader. Geology. 416 MESOZOIC ERA—AGE OF REPTILES. J The flora of the Trias is very imperfectly known. We find, how- ever, no longer the great coal-making trees of the Carboniferous—Sig- illarids, Lepidodendrids, and Calamites — though Tree-ferns still continue in abundance, but of differ- ent types from those of the coal. The forest-trees seem to have been principally Tree-ferns, Cycads, and Conifers, although the last two did not reach their highest development until the next period. For this reason we will put off the full
. Elements of geology : a text-book for colleges and for the general reader. Geology. 416 MESOZOIC ERA—AGE OF REPTILES. J The flora of the Trias is very imperfectly known. We find, how- ever, no longer the great coal-making trees of the Carboniferous—Sig- illarids, Lepidodendrids, and Calamites — though Tree-ferns still continue in abundance, but of differ- ent types from those of the coal. The forest-trees seem to have been principally Tree-ferns, Cycads, and Conifers, although the last two did not reach their highest development until the next period. For this reason we will put off the fuller discussion of them until we come to that period. Animals.—Among Echinoderms we find no longer any Oystids and Blastoids; but Crinids, beautiful Encrinites, with long plumose arms, are very abundant (Fig. 601). Among Brachiojpods the familiar square-shoul-. 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
