I.—On the Fauna of the Upper Cassian Zone in Falzarego Valley, South Tyrol

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Abstract
Having the opportunity of revisiting Munich, I have drawn up a list of the fossils which formed the basis of the “Upper Cassian Zone,” erected by me in 1893. These fossils, when I discovered them in Falzarego Valley in 1891, were then for the most part unknown. The tuffs and breccias in which they occur had been referred by Loretz to the fossiliferous Raibl horizon of the Schlern Plateau, and by Mojsisovics to the much lower horizon of Wengen strata. I found, by careful collection from strata in position, that the fauna, in addition to a fair proportion of St. Cassian types and a few Raibl types, comprised a number of types common both to Cassian and Raibl horizons and a still greater number of species which had not been found elsewhere (Q.J.G.S., 1893, pp. 31, 44, 46, 47).

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