Traits taxon details
original description
Kobayashi, T. (1955). The Ordovician fossils from the McKay Group in British Columbia, western Canada, with a note on the Early Ordovician paleogeography. <em>Journal of the Faculty of Science, Tokyo University, section 2. Geology, Mineralogy, Geography, Geophysics.</em> 9(3): 355–493. [details]
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