1. Calder, J. H., Boehner, R. C., Brown, D. E., Gibling, M. R., Mukhopadhyay, P. K., Ryan, R. J. and Skilliter, D. M. 1998. “Classic Carboniferous sections of the Minus and Cumberland basins in Nova Scotia. With special reference to organic deposits. The Society of Organic Petrology Annual Meeting Field Trip”. 1998–5. Department of Natural Resources Open File Report ME.
2. On the discovery of tetrapod trackways from Permo-Carboniferous redbeds of Prince Edward Island and their biostratigraphic significance