George, T. N. (1932). The British Carboniferous reticulate Spiriferidae. <em>Quarterly Journal of the Geological Society of London.</em> 88: 516-575.[details]
original descriptionGeorge, T. N. (1932). The British Carboniferous reticulate Spiriferidae. <em>Quarterly Journal of the Geological Society of London.</em> 88: 516-575.[details]
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