• Large Ammonite Aptychus - Unknown Location

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    Large Ammonite Aptychus, and partial ammonites - Unknown Location / age

    Aptychi come as symmetrical pairs, therefore, this represents one side of the pair. They are now considered to be either a jaw piece or a two-valved closing hatch.

    The aptychus is very large size at 5 cm (max diameter). The matrix is 11 cm x 9 cm x 3 cm