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 Portion of Orthooeras laterals, Phillips. Mountain Limestone. several feet long. The Goniatite is another genus, nearly allied to the Ammonite, from which it differs in having the lobes of the septa free from lateral denticulations, or crenatures ; so that the outline of these is continuous and uninterrupted. Fig. 579. Fig. 580.

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