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Showing results for tags 'kimmeridian'.
Found 4 results
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From the album: cf. Pliosaurus kevani
cf. Pliosaurus kevani jaw section with tooth -
I once stumbled on a group of small kimmeridgian ammos which were all later IDed as Crussoliceras spp. The genus is very rare and poorly known here. Do you have any suggestions about species? Thanks @Ludwigia
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- crussoliceras
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Limestone mold of the phragmocone.
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Calcite mold with a fine residue of green glauconite on the phragmocone. This is the index fossil for the divisum zone. C. divisum is generally larger than C. crusoliense, which reaches an adult diameter of at the most 15 cm. The bipartite ribs crossing the venter continue mostly on until the end of the bodychamber and can become irregular, whereas by C. crusoliense they tend to merge towards the end and remain relatively constant.
