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Monographiae ammoniteorum et goniatiteorum specimen.

Form, structure and function of shell and siphuncle in coiled Mesozoic ammonoids

Description de ammonites des calcaires du château de Crussol, Ardèche (zones à Oppelia tenuilobata et Waagnia beckeri)

The Carboniferous ammonoids of America.

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• The Illinois glacial lobe
  Auteur(s): Leverett, Frank
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• Forest Service atlas