Traits name details
original description
(of ) Grabau, A. W. (1922). Ordovician fossils of north China. In: Ting, V. K.; Wong, W. H. (Eds). <em>Palaeontologia Sinica, Series B.</em> 1(1): 125 pp, 9 pls., available online at https://www.biodiversitylibrary.org/page/23954362 page(s): 87, pl. 7, fig. 8 [details]
basis of record
Endo, R. (1932). The Canadian and Ordovician formations and fossils of South Manchuria. <em>Bulletin of the United States National Museum.</em> 164: i–iii, 1-152, 40 pls., available online at https://library.si.edu/digital-library/book/bulletinunit1641932unit page(s): 92 [details]
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