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Published online by Cambridge University Press: 01 May 2009
However paradoxical it may appear, we have reason to believe that the occurrence of so-called ganoidian fishes—of a freshwater type—in the Old Red Sandstone affords the strongest evidence in favour of its marine origin. That recent representatives of the ganoids of the Old Red Sandstone inhabit rivers and lakes of the globe, is by no means a proof of the fresh-water origin of the latter fishes. The immense interval of time implied by the comparison renders its value somewhat problematical. Sir A. Geikie, in referring to the fishes of the Old Red Sandstone, says: “That some of the fishes found their way to the sea, as our modern salmon does, is indicated by the occasional occurrence of their remains among those of the truly marine fauna of the Devonian rocks.”
page 218 note 1 “Classbook of Geology,” 1890, p. 262.
page 218 note 2 Günther, “Study of Fishes,” 1880, p. 631.
page 218 note 3 Proc. Roy. Phys. Soc. Edinburgh, vol. xii, p. 283.Google Scholar
page 218 note 4 Proc. Perthshire Soc. Nat. Sci. 1893–4.
page 219 note 1 Proc. Perthshire Soc. Nat. Sci. 1893–4.
page 219 note 2 Brit. Assoc. Address by Sir J. D. Hooker, 1881.
page 219 note 3 Nat. Science, vol. i, No. 8, p. 602.Google Scholar
page 219 note 4 Ann. and Mag. Nat. Hist., sec. 6, vol. xiv, p. 370.Google Scholar
page 219 note 5 “Textbook of Geology,” 1882, p. 706.
page 219 note 6 ibid., p. 714.
page 220 note 1 See Nature, 10th April, 1890.
page 220 note 2 “Manual of Palæontology,” 1872, p. 521; also Annals of Botany, vol. v, No. xviii, p. 158.Google Scholar
page 220 note 3 “Textbook of Geology,” A. Geikie, 1882, p. 703.
page 220 note 4 ibid., p. 704.
page 220 note 5 ibid., p. 704.
page 220 note 6 “Acadian Geology,” 1855, p. 315.
page 221 note 1 Report Geol. Surv. Canada, 1871, p. 4.
page 221 note 2 “Textbook of Geology,” A. Geikie, 1882, p. 706.
page 221 note 3 “The Old Red Sandstone,” 4th ed., 1850, p. 285.Google Scholar