Romaniceras deverianum Subzone: Revision history

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30 September 2013

  • curprev 11:5311:53, 30 September 2013Dbk talk contribs 337 bytes +337 Created page with "An assemblage subzone, containing the index species, ''Subprionocyclus'' and heteromorph ammonites (Gale, 1996). The subzone appears to equate with the highest part of the ''T..."