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†Frequentispirifer Schemm-Gregory 2009
urn:lsid:organismnames.com:name:4349406
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57
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†Frequentispirifer Schemm-Gregory 2009
Schemm-Gregory 2009. Frequentispirifer, a new spiriferid genus and its phylogenetic position within the Delthyridoidea (Brachiopoda, Lower Devonian). Neues Jahrbuch fuer Geologie und Palaeontologie Abhandlungen, 251(1), January 2009: 53-70