Kobayashi T. (1927). Ordovician fossils from Corea and South Manchuria. <em>Japanese Journal of Geology and Geography.</em> 5(4): 173-212. page(s): 181, pl. 18, fig. 6; pl. 19, fig. 3a-c [details]
original descriptionKobayashi T. (1927). Ordovician fossils from Corea and South Manchuria. <em>Japanese Journal of Geology and Geography.</em> 5(4): 173-212. page(s): 181, pl. 18, fig. 6; pl. 19, fig. 3a-c [details]
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