IN EASTERN CANADA. AMI. 173 



Dr. S. A. Miller, in his " North American Geology and Palae- 

 ontology," containing that useful Catalogue of North American 

 Palseozoic Fossils, does not record a single Amphibian from rocks 

 older than the Carboniferous, and the genera Sauropua and 

 Uylopus occurring in the Riversdale formation of Nova Scoti^ 

 are identical with and similar to those found in the Carbonifer- 

 ous, or other regions of North America. 



Prof. James D. Dana, in his " Manual of Geology," Sir Arch- 

 ibald Geikie in his " Text Book of Geology," also, all the leading 

 nomenclators and writers on North American or European 

 Geology and Palaeontology, agree in placing the genera Sauropus 

 and Hylopus to which I have referred the footprints from 

 Parrsboro and Harrington River, of Cumberland and Colchester 

 County, from the Riversdale formation, as Carboniferous. 



Lamellibr<mchiata.Ot these the most conspicuous are the 



AnthracomycB of Sal tor, which Sir William Dawson described 



under the name of Naiadites. These shells are abundant in the 



Coal Measures of the Joggins, Springhill, Plctou and Sydney 



Basins of Nova Scotia, also in the Pennsylvania, Virginia and other 



coal areas of the United States, not to speak of their occurrence 



in the Carboniferous of England and France, and many other 



countries of Europe. They occur in bands in the Riversdale 



formation at Riversdale, and in numerous outcrops along the 



banks of the Harringtoh River, on the dividing line between 



Colchester and Cumberland Counties, and the term " Naiadites 



Bands " or " Naiadites Shales," which are usually associated 



with Ostracoda of the genus Carbonia, and other allied genera 



of Carboniferous affinity, is applicable to these Eo-Carboniferous 



bands. All writers on Geology and Palaeontology, concur in 



placing these shells in the Carboniferous. All the species recorded 



from the United States are referred to the Coal Measures, whilst 



those from the Union and Riversdale formations of Colchester 



and Cumberland Counties in Nova Scotia, are, by the writer, 



placed in the Eo-Carboniferous. It will thus be seen that the 



palseentological evidence adduced in the geological collections so 



far obtained from the Riversdale formation of Nova Scotia, 



