m PROCEBDIW«S OF SBCTIOW C. 



Silurian Fossils of Victoria — Tanjiltan — continited. 



Spicieg. 



CEPHALOPODA. 



Dawsonoceras sp. 

 Kinoceras striatopuncta- 



tum, Miinster, sp. 

 Orthoceras sp. . . 



PHYLLOCARIDA. 



Oeratiocaris cf. salteriana 

 Jones and Woodward 



Reefton 

 McMahon's 

 ; Reefton 

 Rsefton 



Jordan River 



Creek ; 



References. 



Nat. Mus. Ooll. 

 McCoy ('79), p. 28, pi. LVTI., 

 figs. 7, 8. " Orthoceras'^* 

 Nat. Mus. Coll. 



Chapman ('12*), p. 233 



Notes and Summary. 



The third column in the foregoing lists contains references chiefly 

 to Austrdlian literature. 



As will be readily seen, the faunas of the Victorian Silurian are 

 rich in interesting species, and full of promise to future workers. 



In the Melbournian division, 136 fossil forms are recorded ; whilstin 

 the Yeringian there are no less thrn 206 species. The Tanjilian fauna 

 contains 20 species. Of the Melbourni.n and Yeringian series, only 

 16 species are in common, showing the division between the two to be 

 well marked, and prob. bly separated by a distinct geological pause in 

 sedimentation. The T< njilic n hrs two forms in common with the 

 Yeringian, viz., Haiiserites dechenianus and Lunulicardium anti- 

 striatum ; and one species, Monograptus dubius is found in the 

 Melbournian. 



The Yeringian fossiliferous deposits, although largely in the form 

 of shale beds and mudstones, must at one time have been highly 

 calcareous in their nature. Judging from their excessive abundance, 

 the shells and corals, which are now only found in the form of casts, 

 must then have contributed a considerable proportion of carbonate of 

 lime to the Upper Silurian rocks of Victoria. 



The almost Devonic aspect of a certain proportion of the Yeringian 

 find Tanjilian faunas is strikingly evident, i s seen in the profusion of 

 Pleurodictyum in the former, so characteristic of the Hercynif n fauna 

 of the Harz ; and also of many of the br: claopods, as Leptostrophia, 

 and bivalves such as Giossites. The Ti njilian series fully justifies its 

 separation, palseontologic-.lly speaking, from the other Silurisn series, 

 in containing generic typos like that of the Onondrga series of North 

 America, and of the Devonian of Europe, with Panenka and Styliola. 



