. IN EASTERN CANADA—AMI. al 
formations of Union and Riversdale, giving us the following 
natural, though interrupted general succession of strata, in 
descending order :— 
SUCCESSION. CoNDITIONS. FossILs. 
III. Coal Measures’ and Estuarine. Land plants, land animals, 
Millstone grit. shallow water conditions 
and forms, 
If. Windsor formation. |Marine. Marine shells, corals, sea- 
life. 
see oS |) ee Ee 3 
I. Union and Riversdale Estuarine. Land plants, land animals, 
formations. shallow water conditions 
and forms. 
As evidence of the similarity of forms peculiar to the Ko- 
Carboniferous of Colchester and Pictou Counties and the Coal 
measures of the same, let us take the different orders or groups 
of fossil organic remains affording Paleontological evidence as 
noted on page 181 of the “Summary Report of the Geological 
Survey Department for 1898 and 1899.” 
EVIDENCE FROM ANIMAL LIFE. 
Insecta —Neuropterous insects have been discovered in the 
shallow water deposits of Riversdale age, in a cutting on the 
Intercolonial Railway east of Riversdale and Campbell’s Siding, 
about a mile and a half west of West River Station, and the 
wing obtained and sent to the Museum d’Histoire Naturelles, is 
referred to a Carboniferous genus by Prof. Brongniart, of Paris, 
France—a most eminent authority on the Fossil Insects of the 
Carboniferous. 
Phyllopoda.—The numerous specimens of Leaia and Estheria 
from the Carbonaceous and other shales of the Riversdale form- 
ation of Colchester, Pictou, and Cumberland Counties, are very 
similar to the forms described from the Coal Measures of Pictou, 
County, and also from the Coal Measures of the United States. 
All the species of Leaia recorded in North America so far, are 
