168 SUBDIVISIONS OF THE CARBONIFEROUS SYSTEM 
Riversdale District—Fossils from this locality were 
obtained along the Black River branch of the Salmon River, 
along the Calvary Brook, just east of Riversdale; also in the 
numerous cuttings along the line of the Intercolonial Railway 
between West River Station (Pictou County) and Riversdale 
Station (Colchester County). 
In the rather fine grained dark gray or greenish gray 
arenaceous and black or dark carbonaceous shales of the cuttings 
along the I. C. R., plants, as well as animal remains, occur. 
Amongst the groups of organic remains examined and reported 
upon up to date are aseries of plants sent to Mr. Robert Kidston 
of Stirling, Scotland. The entomostraca were submitted to 
Prof. T. Rupert Jones, F. R.8., and the crustacea (Podophthal- 
mata) to Dr. Henry Woodward. 
. PLANTA. 
1, Arterophyllites acicularis, Dawson,( = Calamocladns equi- 
setiformis, Schl.) 
2. Sphenopteris marginata, Dawson. 
3. Neuropteris, sp. 
4, Alethopteris, sp.; allied to Alethopteris valida, Boulay. 
5. Cordaites principalis, Germar, 
6. ‘ Robbii, Dawson. 
7. Cyclopteris (Nephropteris) varia, Dawson. 
8. Calamites, sp. (2) 
9. Cardiocarpum cornutum, Dawson. 
Crustacea, (Xiphosura). 
Belinuride. 
1. Belinurus grandevus, Henry Woodward and T. R. Jones. 
CRUSTACEA, (Entomostraca). 
Phyllopoda. 
1. Leaia tricarinata, Meek and Worthen. 
2. Leaia Leidvi, var. Beentschiana, Beyrich and Geinitz. 
3. Estheria Dawsoni, Jones. 
