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†Palaeospyroceras Chen 1981
urn:lsid:organismnames.com:name:268313
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cicmliili
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†Palaeospyroceras Chen 1981
Chen 1981. Silurian nautiloid faunas of central and southwestern China. Memoirs of Nanjing Institute of Geology and Palaeontology, 13 1981: 1-104