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†Laevispirifer Ushatinskaya 1977
urn:lsid:organismnames.com:name:22482
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137
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†Laevispirifer Ushatinskaya 1977
Ushatinskaya 1977. [New Silurian Cyrtiacea from central Kazakhstan.] Stukalina, G.A.[Ed]. [New species of fossil plants and invertebrates of USSR.], Nauka, Moscow, 1977: 14-18. Chapter pagination: 137-138