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†Orthorizoceras Kroger 2008
urn:lsid:organismnames.com:name:1997709
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†Orthorizoceras Kroger 2008
Kroger 2008. Nautiloids before and during the origin of ammonoids in a Siluro-Devonian section in the Tafilalt, Anti-Atlas Morocco. Special Papers in Palaeontology, 79, March 2008: 1-110