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inrtiiieiitata iJawson. Above: Rones of skull and anterior extremity, and bony rods of hellv. 

 Below: Bones of pelvis and posterior extremity. Nearly natural size. Erect tree, Coal formation, 

 South Joggins, Nova Scotia. Photograph by Dawson, published through the courtesy of Dr. Arthur 

 Willey. Original specimen in the Peter Redpath Museum of McGill University. 



