. Elements of geology : a text-book for colleges and for the general reader. Geology. Fig. Fig. 809. Figs. 807-809.—Cretaceous Fishes— Teleosts: 807. Porthens. restored, Beryx Lewesiensis. 809. Osmeroides Mantelli. (after Cope). 808. idly disappearing. In Europe, twenty-five genera of Cycloids and fif- teen of Ctenoids are found in the Cretaceous (Dana). Palaeozoic Mesozoic Cenozoic Fig. 810.—Diagram representing the Distribution in Time of Placoids. Reptiles.—This class seems to have culminated about the end of the Jurassic or the beginning of the Cretaceous period. If their re- mains a
. Elements of geology : a text-book for colleges and for the general reader. Geology. Fig. Fig. 809. Figs. 807-809.—Cretaceous Fishes— Teleosts: 807. Porthens. restored, Beryx Lewesiensis. 809. Osmeroides Mantelli. (after Cope). 808. idly disappearing. In Europe, twenty-five genera of Cycloids and fif- teen of Ctenoids are found in the Cretaceous (Dana). Palaeozoic Mesozoic Cenozoic Fig. 810.—Diagram representing the Distribution in Time of Placoids. Reptiles.—This class seems to have culminated about the end of the Jurassic or the beginning of the Cretaceous period. If their re- mains are more abundant in the Jurassic in Europe, they are far more abundant in the uppermost Jurassic (Atlantosaur beds) and in the Cre- taceous in America. In fact, we had here in America during the Cre- taceous an extraordinary abundance and variety of reptilian life, in- cluding all the principal orders already mentioned, viz., Enaliosaurs,. 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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