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†Ryspoceras Zhuravleva 1978
urn:lsid:organismnames.com:name:19952
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163
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†Ryspoceras Zhuravleva 1978
Zhuravleva 1978. [Devonian Orthoceratoidea.] Trudy Paleontologicheskogo Instituta, 168 1978: 1-224