. Handbook of zoology [microform] : with examples from Canadian species, recent and fossil :. Zoology; Invertebrates; Zoologie; Invertébrés. radiata. 9» Beside the typical crinoids, there occur as fossils two other groups, known to us only by their skel- etons, but included in this order. They are : 1. Cystidece.—Not divided in a quinate manner, but Oral opening with valves. Arms few, and free or attached. The Cystideans are, as a "whole, extinct, and belong to the Palaeozoic rocks, (Fig. 70), but a living species from Torres Strait has recently been described by Prof
. Handbook of zoology [microform] : with examples from Canadian species, recent and fossil :. Zoology; Invertebrates; Zoologie; Invertébrés. radiata. 9» Beside the typical crinoids, there occur as fossils two other groups, known to us only by their skel- etons, but included in this order. They are : 1. Cystidece.—Not divided in a quinate manner, but Oral opening with valves. Arms few, and free or attached. The Cystideans are, as a "whole, extinct, and belong to the Palaeozoic rocks, (Fig. 70), but a living species from Torres Strait has recently been described by Prof. Loven, under the name of Ilyponome Sarsii. 3. Blastoideoe.—Body divided in a quinate manner, but ^Yithout arms. Those are the Pentre- mites. These creatures are all extinct, and are especially characteristic of the Carboniferous rocks in Western America. (Fig. 71.) Fig. 70. Fig. 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. Montreal : Dawson
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1870
