52 BULLETIN OF THE NATUKAL HISTORY SOCIETY. 



The Silurian-T)evonian terrane is composed of three principal 

 members, of which the two lower, by their marine faunas, are 

 Silurian, and the upper apparently corresponds to the Eo-Devo- 

 nian terrane on the south side of the Bay of Fundy. 



The land fauna is found in the middle member of this 

 Siluro-Devonian series, and briefly the following is an outline of 

 the conditions marked by the several terranes resting on the 

 St. John group. 



At the top are : 



Red sandstones with overlying conglomorates. These 

 are equivalent to those of Nova Scotia, which are 

 called Triassic and Jurassic. 



A marked unconformity occurs here. 



Beneath these are : 



Coal measures, etc. Beds horizontal or inclined at low 

 angles. Containing the Coal Flora. 



Lower Carboniferous Conglomerate and Shale, More 

 disturbed. Containing a Flora allied to that of the 

 Devonian. The coals are hituminous. 



An ihnconformity occurs here with great erosion and 

 extrusion of granite. 



Devonian Conglomerate and Shale. No distinctive fos- 

 sils known. Plant remains of this terrane and all 

 below are non-bituminous. 



Unconforynity zvith much erosion. 



Little River Group. 



Upper Cordite Shales (Eo-Devonian ?) The Flora of the 

 Plant Beds continues up into this group. 



Lower Cordaite shales, Silurian. Appearance of the 

 typical Flora of the Plant Beds in bed No. "2. This 

 is the place of the Land Fauna, described and figured 

 in this article. 



Dadoxylon Sandstone, Silurian. An earlier Flora here, 

 including that of Plant Bed No. 1.* 



Bloomsbury Conglomerates (local) resting on old eroded 

 land surfaces. 



Marked unconformity to the St. John Group, etc. 



♦Spoken of in Transactions Royal Society, Canada, Vol. VI., Sec. iv,,p. 01 (at 

 bottom) as a Devonian Flora, 



