. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Ch. XXVI.] OLD RED SANDSTONE. 525 Fig. 587. (see figs. 585 and 586). The stems of the latter have, in some speci- mens, broad bases of attachment, and may therefore have been tree- ferns. In the same strata shells having the form of the genus Anodon, and which probably belonged to freshwater testacea, occur. Some geolo- gists, it is true, still doubt whether these beds ought not rather to be classed as the lowest beds of the carboniferous series, together with the ye
. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Ch. XXVI.] OLD RED SANDSTONE. 525 Fig. 587. (see figs. 585 and 586). The stems of the latter have, in some speci- mens, broad bases of attachment, and may therefore have been tree- ferns. In the same strata shells having the form of the genus Anodon, and which probably belonged to freshwater testacea, occur. Some geolo- gists, it is true, still doubt whether these beds ought not rather to be classed as the lowest beds of the carboniferous series, together with the yellow sandstone of Sir R. Griffiths (see p. 466); but the asso- ciated ichthyolites and the distinct specific character of the plants, strongly favor the opinion above expressed. B.—We come next to the middle division of the " Old Red," as exhibited south of the Grampians, and consisting of—1st, red shale and sandstone, with some cornstone, occupyiug the Valley of Strathmore, in its course from Stonehaven to the Firth of Clyde ; and, 2dly, of a con- glomerate, seen both at the foot of the Grampians, and on the flanks of the Sidlaw Hills, as shown in the section at p. 48, Nos. 1, 2, and 3. In the uppermost part of the di- vision No. 1, or in the beds which, in Fife, underlie the yellow sand- stone, the scales of a large ganoid fish, of the genus HoloptycMus, were first observed by Dr. Fleming at Clashbinnie, near Perth, and an en- tire specimen, more than 2 feet in length, was afterwards found by Mr. Noble. Some of these scales (see fig. 58*7) measured 3 inches in length and 2-J in *K Scale of HoloptycMus nobilissimus, Agass. Clashbinnie. Nat. 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 Lyell, Charles, Sir, 1797-1875. New York, D. Appleton and co.
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