The Ages of the Earth   
(Les Ages de la Terre)


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AGE PRIMAIRE

SYSTEME CARBONIFERE (*New*)
SYSTEME DEVONIEN(Illustrated below)

SYSTEME PERMIEN (*New*)
SYSTEME PRECAMBRIEN (*New*)
SYSTEME SILURIEN

AGE SECONDAIRE

SYSTEME CRETACE INFERIEUR
SYSTEME CRETACE SUPERIEUR(Illustrated below)

SYSTEME JURASSIQUE INFERIEUR (*New*)
SYSTEME JUARASSIQUE MOYEN (*New*)
SYSTEME JURASSIQUE SUPERIEUR
SYSTEME TRIASIQUE

AGE TERTIAIRE

SYSTEME EOCENE
SYSTEME MIOCENE(Illustrated below)

SYSTEME OLIGOCENE (*New*)
SYSTEME PLIOCENE (*New*)

AGE QUATERNAIRE

SYSTEME EOCENE
EPOQUE PREHISTORIQUE (*New*)
SYSTEME PLEISTOCENE (*New*)

TRANSFORMATIONS DE LA FRANCE
    


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