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Showing 1 to 1 of 1 for “"Guzhangian"”.
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Middle Cambrian linguliformean brachiopods of the Pika and Sullivan formations, southern Canadian Rocky Mountains, Alberta, Canada
… assemblage from the Cedaria trilobite Biozone (Guzhangian Stage) of the Sullivan Formation includes the obolids Dicellomus politus Hall 1871, D. cf. D. amblia Bell 1944, D. appalachia Walcott 1905, and D. nanus Meek and Hayden 1862. No acrotretids were recovered. This low-diversity fauna could …