. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Platystoma Suessii, Hoernes. From Hallstadt. ScoUostoma, St. Oassian. Fig. KonincMa Zeonhardi, Wissmann. a. Dorsal view, natural size. &. Ventral view, part of the converse ventral valve removed to show the interior of dorsal valve and its vascular impressions. One of the spiral processes is seen through the translucent shell. c. Section of both valves. d. Interior of dorsal valve, with spiral processes restored. (Suess.) The following table of genera of ma
. Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments. Geology. Platystoma Suessii, Hoernes. From Hallstadt. ScoUostoma, St. Oassian. Fig. KonincMa Zeonhardi, Wissmann. a. Dorsal view, natural size. &. Ventral view, part of the converse ventral valve removed to show the interior of dorsal valve and its vascular impressions. One of the spiral processes is seen through the translucent shell. c. Section of both valves. d. Interior of dorsal valve, with spiral processes restored. (Suess.) The following table of genera of marine shells from the Hallstadt and St. Cassian beds, drawn up on the joint authority of MM. Suess and Woodward, shows how many connecting links between the fauna of primary and secondary rocks are supplied by the St. Cassian and Hallstadt 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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Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1868
