Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 Phacops latifrons, Bronn. Characteristic of the Devonian in Eu- rope, Asia, and N. and S. America. Petherwyn Group.—A series of limestones and slates best developed at Petherwyn, in Cornwall. Among many other fossils, the Clymenia linearis (fig. 603) and the minute crustacean, Cypridina serrato-striata (fig. 604), are so characteristic of these upper beds in Belgium, the Fig. 604. Cypridina serrato-striata, Sand-
Elements of geology, or, The Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments elementsofgeolog00lyel Year: 1868 Phacops latifrons, Bronn. Characteristic of the Devonian in Eu- rope, Asia, and N. and S. America. Petherwyn Group.—A series of limestones and slates best developed at Petherwyn, in Cornwall. Among many other fossils, the Clymenia linearis (fig. 603) and the minute crustacean, Cypridina serrato-striata (fig. 604), are so characteristic of these upper beds in Belgium, the Fig. 604. Cypridina serrato-striata, Sand- berger, Weilburg, &c,; Nassau; Saxony; Belgium. Clymenia linearis, Munster. Petherwyn, Cornwall; Elbersreuth, Bavaria. Rhenish Provinces, the Hartz, Saxony, and Silesia, that strata of this division in Germany are distinguished by the names of ' Clymenien- Kalk ' and ' Cypridinen-schiefer.' * With these are many Goniatites (G. subsulcatus, Munster, and other See Murcliison's Siluria, 2d ed., chaps, x., xiv., and xv.
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