Landing, E., Westrop, S.R., 2015. Late Cambrian (middle Furongian) Shallow-Marine Dysoxic Mudstone with Calcrete and Brachiopod?Olenid?Lotagnostus Faunas in Avalonian Cape Breton Island, Nova Scotia. Geological Magazine 152, 973-992. doi:10.1017/S001675681400079X