Lyons, Paul C., and Robert G. Sproule. “The Fossil Flora and Age of the Wamsutta Red Beds (Middle Pennsylvanian), Narragansett Basin, Southeastern Massachusetts, USA and Correlation With the Cumberland Group of the Maritime Provinces of Canada”. Atlantic Geoscience 54 (October 1, 2018): 315–334. Accessed August 19, 2022. https://journals.lib.unb.ca/index.php/ag/article/view/25660.