﻿FR. VON HAUER ON SOME OUTLIERS OF THE ALPS. 85 



pyrites. Thus the ferruginous loam passes sometimes into ferrugi- 

 nous oolite, which only rarely contains fossils, as for instance Belem- 

 nites Pander anus, d'Orb. Upon this loam lies a black or grey cal- 

 careous loam, micaceous, and very similar to lias, containing besides 

 Am. alternans and Belemn. absotutus, vertebra of Ichthyosaurus pi r a- 

 tyodon and Plesiosaurus Frearsii. The shaly clay of Medjansk for 

 the most part resembles lias ; it is so black and bituminous that it 

 was formerly mistaken for a coal-formation. A similar liassic loam 

 is found near Simbirsk. This loam appears at many places in the 

 government of Moscow, and upon it reposes a sandy marl, coarse- 

 grained, shaly, and black, containing mica-flakes and gypsum ; it al- 

 ternates with a black loam, containing many nodules of argillaceous 

 ironstone. All these beds abound with organic remains, as Cidaris 

 gemmifer, Dentalium gladiolus, Terebrat. Fischerana, T. aptycha, 

 T. oxyoptycha, Avicula (Aucella) Fischerana, Pecten lens, P. demissus, 

 Astarte, Area, Lyriodon, Orbicula Mceotis, a Turrilite-like Scyphia 

 ventricosa, numerous Ammonites, and a few Shark-teeth. The 

 Jurassic beds in the government of Simbirsk are, from Jasykow's re- 

 searches, as well known as those of the northern Ural, on the Lobe- 

 sina and Tolga. In the latter many large Ammonites chiefly occur, 

 as Am. borealis, above a foot and a half in diameter, Am. Konigi, 

 Am. Sagitta, Am. polyplocus, Am. septentrionalis, also Belemn. 

 curtus (Russiensis, d'Orb.), B. mammillaris, Pleurotomaria septen- 

 trionalis, Pholadomya angustata, Ph. monticola, and several others ; 

 Panopcea antiqua, Astarte Veneris, Cucullcea Vogulica, many Pinnce, 

 and other species, but chiefly Terebratulce. in great quantities. The 

 Jurassic beds also of Ilezkaja and Obschey Sirt in the south of 

 the Ural are remarkable for their fossils. The Great Balchan, on the 

 eastern coast of the Caspian Sea, consists in its upper portion of 

 Jurassic strata. The " Jura "-formations of the Caucasus and the 

 Crimea are rich in Corals and Crinoidea, which are not found in the 

 more northerly Jurassic basins. The " Jura "-formations in north- 

 ern Asia near the rivers Jenisei and Lena, are less known. Lastly, 

 according to the author, the " Jura" is present in New Siberia. 



[T. R. J.] 



On some Outliers of the Alps west of Neustadt and Neun- 

 kirchen. By Fr. von Hauer. 

 [Haidinger's Berichte, Band vi. p. 10.] 

 Herr von Hauer communicated the results of some geological in- 

 vestigations made in the spring of 1849, first in the company of Dr. 

 Homes and subsequently in that of HH. Morlot and Czjzek, among 

 the outliers of the Alps west of Neustadt and Neunkirchen ; in order 

 to ascertain whether, as has been frequently asserted, Nummulites 

 really occur mixed with the chalk fossils of the Gosau formation. 



The first spot visited was the declivity of the Gahnsberg, north- 

 west of Gloggnitz. The neighbourhood of what is called the Pos- 

 chenhaus and of Gahnsbauer had been pointed out as very important 

 by Herr Partsch. 



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