. Elements of geology : a text-book for colleges and for the general reader. Geology. Fig. 432.—Osteolepis (after Nicholson). Holoptychius (Fig. 431), Diplachanthus (Fig. 434), etc., had more fish- like forms, and were covered with movable ganoid scales, either rhom- boidal or Fig. 436. Figs. 433-436.—Devonian Fishes—Lepidoganoids: 433. Glyptolemus Kinairdii (after Nicholson). 434. Diplacanthus gracilis (after Nicholson). Placoids: 435. Ctenacanthus vetustus, Spine re- duced (after Newberry). 436. Machaeracanthus major, Spine reduced (after Newberry). Perhaps the most extraordinar
. Elements of geology : a text-book for colleges and for the general reader. Geology. Fig. 432.—Osteolepis (after Nicholson). Holoptychius (Fig. 431), Diplachanthus (Fig. 434), etc., had more fish- like forms, and were covered with movable ganoid scales, either rhom- boidal or Fig. 436. Figs. 433-436.—Devonian Fishes—Lepidoganoids: 433. Glyptolemus Kinairdii (after Nicholson). 434. Diplacanthus gracilis (after Nicholson). Placoids: 435. Ctenacanthus vetustus, Spine re- duced (after Newberry). 436. Machaeracanthus major, Spine reduced (after Newberry). Perhaps the most extraordinary and certainly the largest of all Devonian fishes belong to the family of Dinichthys. The peculiar structure of jaws and teeth is shown in Fig. 423, taken from Newberry. Almost equally remarkable is another Ohio fish described by Dr. New- berry, the singular teeth of which are shown in Figs. 425 and 426. 22. 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
