. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 1. Upper half of spine. 2. Basal extremity. This spine presents features differing very materially from the species of Gyracanthus hitherto described. In general form and outline it is similar to Gyracanthus formosits, Ag.*, except that it is much compressed laterally and of a more delicate and elegant mould. It, however, differs materially from the types of Agassiz, as well as all others, in having a double row of denticles along the dorsal aspect. Prof. M'Coyf has described
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. 1. Upper half of spine. 2. Basal extremity. This spine presents features differing very materially from the species of Gyracanthus hitherto described. In general form and outline it is similar to Gyracanthus formosits, Ag.*, except that it is much compressed laterally and of a more delicate and elegant mould. It, however, differs materially from the types of Agassiz, as well as all others, in having a double row of denticles along the dorsal aspect. Prof. M'Coyf has described a species of Gyracanthus from the Yellow Sandstone at the base of the Carboniferous series near Draperstown, which has indications of a small number of denticles near the apex; it is named obliquus, and is rounder and more robust than the one here described ; it has not the smooth space near the apex ; and the denticles appear to be of quite a diffe- rent form, besides being so limited in number and extent. I suggest the specific name denticulatus, as serving to distin- guish the special features of the specimen now described. Locality. Tingley, near Leeds. In an impure cannel coal of the Middle Coal-measures. * Poissons Fossiles, vol. iii. p. 17, tab. v. figs. 4, o, 6, 7, 8. t Brit. Palteoz. Bocks and Foss. p. 629, pi. 3 K. figs. 13, 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 London, Taylor and Francis, Ltd
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Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
