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by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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CERATITES AMMONITE WITH BEAK

A lovely example of the ammonite, Cératites Nodosus, an extinct genus of nektonic marine carnivore from shell limestone superior deposits near Alsace on the Rhine River plain of northeastern France. You can see the nice ceratitic suture pattern on this specimen with his smooth lobes and frilly saddles. The sutures would have increased the strength of the shell and allowed Ceratites (de Haan,

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