. The chain of life in geological time [microform] : a sketch of the origin and succession of animals and plants. Paleontology; Paleobotany; Paléontologie; Paléobotanique. 122 THE CHAIN OF LIFE. The head-shield copied in outline in Fig. 104, and the restora- tion after Lankester in the frontispiece to this chapter, may serve to represent these curious primitive Ganoids, which are continued in the Devonian fishes represented in Figs. 105,106. Along with these, and not improbably their enemies, were certain Sharks (Fig. 104), known to us only by the spines which. Fig. xo^.—Cephalasph Z?a«/Jo«« (
. The chain of life in geological time [microform] : a sketch of the origin and succession of animals and plants. Paleontology; Paleobotany; Paléontologie; Paléobotanique. 122 THE CHAIN OF LIFE. The head-shield copied in outline in Fig. 104, and the restora- tion after Lankester in the frontispiece to this chapter, may serve to represent these curious primitive Ganoids, which are continued in the Devonian fishes represented in Figs. 105,106. Along with these, and not improbably their enemies, were certain Sharks (Fig. 104), known to us only by the spines which. Fig. xo^.—Cephalasph Z?a«/Jo«« (Lankester). Lower Devonian of Gaspd. were attached to their fins as weapons of defence, and by detached bony tubercles which protected their skin. These remains are chiefly interesting as indications that two of the great leading divisions of the class of fishes originated together. In the Devonian age the Ganoids and Sharks, thus introduced in the Silurian, may be said to culminate. The former, more. 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 Dawson, J. W. (John William), Sir, 1820-1899. London : Religious Tract Society
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectpaleontology, bookyea
