12 PKOCEEDINGS OF THE GEOLOGICAL SOCIETY. [NoV. 21, 



by shales full of Lepidodendra, SigiUarice, and Perns, which are also 

 succeeded by limestones and other rocks full of marine fossils having 

 a Devonian or Lowest Carboniferous aspect. 



We thus perceive that in North Queensland as well as in New 

 South Wales the succession is an alternation of plant- and animal- 

 beds ranging through many thousand feet of strata resting on granites, 

 porphyries, or slates, &c., of Lower Palaeozoic age, and covered by 

 the Secondary formations already alluded to, which have no connex- 

 ion with the Coal-seams of New South Wales, and which do not, so 

 far as is known, occur either there or in Victoria. 



2. On the Madeepoearia of the Ineea-Lias of South Wales. By 

 P. Maetin Duncait, M.B. Lond., Sec.G.S. 



Contents. 



1. Introduction. 



2. Description of the Brocastle and Ewenny deposits. 



3. Eemarks upon the Palaeontology of the Sutton and Southerndown series. 



4. The differences between the Liassic beds with Ammonites Buchlandi and 



Gry^phcsa incurva and those of Brocastle, Ewenny, Sutton, and Southern- 

 down. 



5. Notice of the Madreporaria of other British strata of the Brocastle horizon 



and of the Ammonites Planorhis zone of Great Britain. The Madrepo- 

 raria of the White Lias and Avicula contorta zone of Great Britain. 



6. Notice of the strata in France and in the Duchy of Luxembourg which have 



the homotaxis of the Brocastle, Ewenny, Sutton, and Southerndown series. 



7. The geological position of the Brocastle, Ewenny, Sutton, and Southerndown 



series. 



8. General view of the distribution of the Madreporaria from the Keuper to the 



Ammonites Buchlandi beds in Great Britain, France, and Italy. 



9. Conclusion. 



1. Introduction. — Towards the end of 1865, Mr. Tawney sent me 

 a collection of fossils from the Sutton stone in South Wales, and 

 requested me to describe the species of Madreporaria contained 

 in it. This description appeared as an appendix to the elaborate 

 communication "■ On the western limits of the Rhsetic beds in South 

 Wales, and on the position of the Sutton stone," by E. B. Tawney, 

 Esq., E.G.S.* 



The species were but few in number, they were unlike any others 

 from British Secondary rocks, and they presented rather a St. Cassian 

 facies. 



Little could be determined, from their study, concerning the age of 

 the Sutton stonef ; and Mr. Tawney could only give a qualified 

 opinion upon this subject after the examination of the MoUusca. 

 Shortly after these communications were read, Mr. Charles Moore 

 sent me a large collection of fossils from the Sutton stone and from 



* Quart. Journ. Geol. Soc. vol. xxii. p. 69. 



t For an admirable description of these rocks, see Mem. Geol. Survey, vol. i. 

 p. 270, by Sir H. de la Beche. 



