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†Valvimorpha semisphaerica Yan Yuzhong 1985
urn:lsid:organismnames.com:name:554188
Microreference
157
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†Valvimorpha semisphaerica Yan Yuzhong 1985
Yan Yuzhong 1985. Preliminary research on microflora from Chuanlinggou Formation of Changcheng system in Jixian County. Bulletin of the Tianjin Institute of Geology and Mineral Resources, No. 12 1985: 137-168