Excerpt from Pal?ozoic Fossils, Vol. 1: Containing Descriptions and Figures of New or Little Known Species of Organic Remains From the Surian Rocks; 1861-1865
The fossiliferous rocks on the north shore of the Straits of Belle Isle, from which a portion of the species hereinafter described were procured, consist of the following in descending order: -
1. Limestones. - Reddish and greenish-coloured limestone, varying in some places to grey, with some red and green shale. The fossils are Pal?ophycus incipiens, Archeocyathus Atlanticus, A. profundus, Obolus Labradoricus, Obolella chromatica, O.? cingulata, Olenellus Vermontana, O. Thompsoni, Conocephalites miser, Bathyurus parvulus, B. senectus, Salterella rugosa, S. pulchella, and S. obtusa. There are, besides these, two species of Orthis and one of Orthisina, and numerous fragments of trilobites, apparently of several undescribed forms. The thickness of these limestones is 141 feet.
2. Sandstones. - Grey, red and reddish-grey sandstones, the lower beds holding pebbles of white quartz from the size of a pea to one or two pounds in weight. The only fossil observed is Scolithus linearis. Thickness 231 feet.
These rocks rest upon the Laurentian, and their fossils show them to be of the age of the Potsdam group. They were examined by Mr. J. Richardson during the past summer.
Another exposure of rocks of the same age occurs about three miles east of Phillipsburgh in the County of Missisquoi, and extends south into the State of Vermont, where it is largely developed, and constitutes the Red sandrock of the geologists of that state. During several visits made to this exposure last summer, I could find no fossils on the Canadian side of the boundary-line, but several important localities occur in the immediate neighbourhood in Vermont. At one of these, 1? mile east of Swanton, a number of species have been found by the Rev. J. B. Perry and Dr. G. M. Hall of that town.
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