360 On the Age of the Sandstones of the Newark Group. 
lias or oolite.” Report, pp. 5-6... ; 
‘‘— Only four species of the genus. Oatopterus are yet known; 
three of which are found in the red sandstone of New England 
and New Jersey and the fourth in the coal rocks of Eastern Vir- 
ginia.”* Report, 
contemplated arrangements for com leting a monograph of the 
fishes of this formation in the Unites! States. J 
I have thus shown the examinations and conclusions of Mr. J. 
H. Redfield on these fishes, as first published in 1887, ane 
found in his report to the American Association in 1845. 40 
the first of these he points out the age of the containing 
* Others have since been obtained. 
