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†Geermuceras Liang 1983
urn:lsid:organismnames.com:name:416701
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†Geermuceras Liang 1983
Liang 1983. New material of Permian ammonoids with discussion on the origin, migration of Araxoceratidae and the horizon of the Paratirolites. Acta Palaeontologica Sinica, 22(6) 1983: 606-615