212 PROCEEDINGS OF SECTION C. 



restricted coral occurs, viz., Caunapora australis,* the genus being 

 otherwise known only in the Clinton and Niagara groups in the United 

 States, and in beds of similar age in Canada. In the Mitta Mitta 

 limestones are found the genera Diphj^jhyllum and Halysites, fossil 

 corals which are better known at present from the Silurian of New South 

 Wales. The limestones of Limestone Creek appear to belong both to 

 the Silurian (Yeringian) and the Middle Devonian ; but the fossil 

 faunas from these deposits have yet to be studied in detail. 



In the diagrammatic section by Prof. Gregory, of the Palseozoio 

 strata from west of Melbourne to Mt. Welliugton, the Yeringian beds 

 of the Lilydale synclinal -are narrowed down to the Lilydale area ; but, 

 as a matter of fact, the Yeringian facies predominates throughout the 

 shales and mudstones along the Upper Yarra as far at least as the 

 junction of the Woori Yallock and Yarra Rivers ; whilst Yeringian 

 fossils occur at View Hill Creek, on the same line of strike to the north 

 of that area. One would therefore be inclined, on present palseonto- 

 logical evidence, to assign all this area to a broadly extended Yeringian 

 basin. On the other side of the granodiorite massif to the east, however, 

 the Silurian shales contain a fauna peculiarly distinct from the typical 

 Yeringian ; and to all api^earances this series should come above the 

 Yeringian proper, since it contains a fauna denoting a high horizon in 

 the Silurian elsewhere. This series comprises the Panenka shales of 

 Mt. Matlock, and Reefton, near Warburton. In the Walhalla district 

 the Panenka shales of the Jordan River series lie on the Walhalla 

 geosynclinal, and abut on Upjier Ordovician graptolite beds. This asso- 

 ciation may, perhaps, best be explained by the hypothesis of an overlap 

 of the newer Silurian. The yellow, blue, and black shaly mudstones 

 of the Panenka beds, besides containing this genus in abundance, also 

 contain innumerable examples of Tentaculites and Styliola, together 

 with the cephalopod Kionoceras striatopunctatum, Miinster sp., an 

 Upper Ludlow form in England and Upper Devonian (Clymenia 

 Limestone) in Germany. Panenka itself is a genus which is rare in the 

 Upper Silurian elsewhere, being more typical of Devonian strata. At 

 the most, therefore, the Panenka shales cannot be, on palaM>ntological 

 grounds, older than the Upper Ludlow, that is, above the Yeringian. 

 Should the stratigraphical evidence j^rove this to belong to a distinct 

 stage in Victoria, I would suggest the term Tanjilian, since the Panenka 

 shales are well developed in the district of the Tanjil River, Gippsland. 



Climatal and Bathymetrical Evidence in the Silurian, 



The bi'achiopod genus Lingula aflfords some interesting data in 

 regard to the above questions. The genus is now restricted to the 



• CTiapia^a t'Q'}), p. 76, PI3. Ill and VIII. 



