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†Helenaeproductus Lazarev 1991
urn:lsid:organismnames.com:name:904194
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117
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†Helenaeproductus Lazarev 1991
Lazarev 1991. Permian invertebrates of southern Mongolia. Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya Trudy, 40 1991: 1-174