Didymoceras stevensoni
Didymoceras stevensoni (Whitfield, 1877).
Campanien superieur
Pierre Shale,
Dakota - USA
Didymoceras stevensoni (Whitfield, 1877).
Campanien superieur
Pierre Shale,
Dakota - USA
dimension: 15 cm
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Référence176
Didymoceras stevensoni (Whitfield, 1877).
Campanien superieur
Pierre Shale,
Dakota - USA
Didymoceras stevensoni (Whitfield, 1877).
Campanien superieur
Pierre Shale,
Dakota - USA
dimension: 15 cm