• Arnioceras semicostatum (5.6 cm) Fossil Ammonite - Somerset - Jurassic

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    Arnioceras semicostatum fossil ammonite from Semicostatum Zone, Radstock, Somerset  - freestanding fossil.


    Dates to the Lower Jurassic


    Unusual & superb calcite ammonite. The ammonite is approximately 5.6 cm (maximum diameter).

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