"Clinton" is said by Rule to be 150 feet thick but this may be decrease. Over the "Clinton" occurs a shale, a red shale that apparently does not occur in the case of Great Orantrulin. This may be genuine Clinton but its age is yet to be proved. This shale Whitaker thought occurs on the top of the mountains at Collingwood beneath the Niagara. He did not see it and based its present line because of a line of springs there. There is perhaps some shale here. Trotte talks of this shale as of Richstun age but this is rather conjecture based on the New York section. No one has yet reported a genuine Clinton back in order here. One common explanation is that the "Clinton" is the limestone facies of the sandstone Orantrulin and that the shales above may be lower Clinton but not the Clinton of the rocks. The Niagara above with its abundant Niagara ends remains or simply if the Louisville Coral out that the Manitrulin age maybe = Louisville.