504 GREAT SERPENTINE BELT OF NEW SOUTH WALES, 1., 



a lenticle of limestone about 100 yards in length, entirely composed 

 of crinoid-remains, and, except for its greater width, completely 

 analogous to the limestones at Burindi. Further north, at Crow 

 Mountain, there is a series of fossils of the same facies as those of 

 Burindi also. These were first noted by Stonier(6d). North 

 again, however, there is an occurrence of quite a different facies, 

 in the shape of a lenticular mass of limestone, composed chiefly of 

 Lithostrotion. These indicate a Carboniferous age for these 

 rocks. It is probable, though not at present capable of proof, that 

 these last are on a rather lower horizon in the Carboniferous, than 

 the Burindi and Crow Mountain fossil-beds. 



The mudstones, with oolitic limestones, on Oakey Creek, south 

 of Warialda, probably belong to the Burindi Series also. 



These areas adjacent to the serpentine are, without doubt, repe- 

 titions of those further west, nipped into the older Barraba rocks 

 during the period of folding. 



The following are the determinative fossils that have been recog 

 nised in this belt of marine Carboniferous rocks. 



In this list, D indicates ft determination made by Mr. W. S. 

 Dun, E by Mr. R. Etheridge, Jun., K by Professor De Koninck 

 (in 1875), and S by Mr. S. Stutchbury, in 1853-5. The various 

 localities studied (with the collectors) are as under: — 

 i. Slaughterhouse Creek . . . Carne. 



ii. Pallal and Eulowrie . . . Stutchbury, Cullen, Porter, 

 iii. Rocky Creek ... ... Pittman. 



iv. Burindi ... ... ... Benson. 



v. Crow Mountain... ... Stonier, Cullen, and Benson. 



vi. Somerton, Carroll, etc. . . . Stonier, Cullen, Porter. 



vii. Paterson, Clarencetown, Clarke, Waterhouse, Cullen, and 

 and Dungog. others. 



The last area is the most fully studied Carboniferous locality in 

 New South Wales, and is added for the sake of comparison. Only 

 such forms as occur elsewhere, also, have been mentioned, so that, 

 for this locality, the list is incomplete. 



