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 436 ST. CASSIAN BEDS, UPPER TRIASSIO. [Ch. XXIL part of the Keuper or Upper Trias; but whether the 'Werfen sand- stone, No. 4, should form part of the same series, or, as Yon Hauer inclines to believe, should be classed as the equivalent of ' the' Bun- ter or Lower Trias,' is still undetermined. The absence of well- characterized Muschelkalk fossils in the Austrian Alps renders this point very difficult to decide. R
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 436 ST. CASSIAN BEDS, UPPER TRIASSIO. [Ch. XXIL part of the Keuper or Upper Trias; but whether the 'Werfen sand- stone, No. 4, should form part of the same series, or, as Yon Hauer inclines to believe, should be classed as the equivalent of ' the' Bun- ter or Lower Trias,' is still undetermined. The absence of well- characterized Muschelkalk fossils in the Austrian Alps renders this point very difficult to decide. Rich deposits of salt, associated with the Werfen beds, have inclined some geologists to presume that they belong to the Upper Trias. Should they be classed as ' Bunter,' the Guttenstein limestone would then correspond in position with the Muschelkalk, but no Muschelkalk fossils have ever been met with in it or in the Werfen. Among the 800 species of fossils of the Hallstadt and St. Cassian beds, many are still undescribed; some are of new and peculiar genera, as Scoliostoma, fig. 467, Platystoma, fig. 468, among the Gasteropoda; and ITonincMa, fig. 469, among the Brachiopoda. Fig. 467. Fie'.
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