570 JOSIAH BRIDGE 



Bowlder No. 16, Locality 10, has yielded but two forms — 

 Syringothyris platypleurus Weller, and Conocardium sp. nov. The 

 former is a typical Lower Burlington form, and the latter is identical 

 with forms described from the bowlders referred to the Burlington 

 white chert. While it is not possible to place such a small fauna 

 definitely, such evidence as there is seems to indicate that it should 

 be correlated with the bowlders which have just been described. 

 These faunas, with the exception of the one from bowlder No. 27, 

 were obtained from bowlders of sandstone or quartzite. Bowlder 

 No. 27 was composed of white chert. As a general rule, however, 

 it may be stated that the Burlington faunas are to be looked for 

 in the quartzite bowlders, and the younger and older faunas in the 

 cherts. 



A number of other bowlders have yielded faunas which are 

 apparently Lower Burlington in age, but which do not contain a 

 fauna which may be classed as being truly representative. These 

 faunas are listed below: 



Locality 10 — Bowlder No. 1 

 Platycrinus sp. 

 Cliothyridina tenuilineata (Rowley) 



Locality 10 — Bowlder No. 6 

 Productus sp. 



Rhipidomella diminutiva Rowley 

 Terebratuloid shell gen. ? sp. ? 

 Spirifer biplicoides Weller 

 Spirifer gregeri Weller ? 



Spirifer sp. 



Locality 12 — Bowlder No. 19 



Fenestella compressa var. elongata Cumings? 



Brachythyris sp. 



Phillipsia tuber culata M. & W. 



Locality 7 — Bowlder No. 21 



Spirifer platynotus Weller 

 Spirifer rowleyi Weller? 

 Spirifer sp. nov. 

 Unidentified crinoid 



The largest fauna which has thus far been obtained has come 

 from a large chert bowlder which was found by Professor Dake. 



