STRATIGRAPHIC RELATIONSHIPS

Every country has his own stratigraphic nomenclature. This is very confusing for everyone and for collectors it makes it very difficult to compare fossils from different countries. Our foundation tries to keep up a survey of the different nomenclatures for the beds where our shells came from. Maybe this can be useful for you, so we give it here. Remember, we give this survey without any pretension. Please let us know about any mistakes in it.
    EUROPE   NORTH AMERICA   NEW ZEALAND
             
PLEISTOCENE       FT.THOMPSON FORMATION   HAWERAN
        BERMONT FORMATION   CASTLECLIFFIAN
        CALLOSAHATCHEE BEDS   NUKUMARUAN
PLIOCENE       "   "
            MANGAPANIAN
    SCALDISIAN   PINECREST BEDS   WAIPIPIAN
            OPOITIAN
MIOCENE           KAPITEAN
    TORTONIAN       TONGAPORUTUAN
    SERRAVALIAN       WAIAUAN
    LANGHIAN       LILLBURNIAN
            CLIFDENIAN
    BURDIGALIAN   SHOAL RIVER FORMATION   ALTONIAN
        CHIPOLA FORMATION   OTAIAN
    AQUITANIAN       WAITAKIAN
OLIGOCENE   CHATTIAN   BYRAM FORMATION   DUNTROONIAN
        MINT SPRING FORMATION   WHAINGAROAN
    STAMPIAN   RED BLUFF FORMATION   RUNANGIAN
EOCENE   BARTONIAN   JACKSON STAGE    
    MARINESIAN       KAIATAN
    AUVERSIAN        
    LUTETIAN   CLAIBORNE STAGE   BORTONIAN
            PORANGAN
            HERETAUNGAN
    YPRESIAN        
    CUISIAN   SABINE STAGE   MANGAORAPAN
    SPARNACIAN       WAIPAWAN
PALEOCENE   THANETIAN   MIDWAY STAGE   TEURIAN
    DANIAN       WANGALOAN
CRETACEOUS   MAASTRICHTIAN   RIPLEY FORMATION    
        COFFEE SAND    

Updated in januari 2007 by Stichting Schepsel Schelp
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