年代：中生代/侏羅紀/中侏羅世/巴裘期(階) Bajocian (172~168ma)
產地：Rubhar Sughar, Isle of Skye, Scotland, UK
賣家的原始說明：This beautiful and rare example has been preserved in solid calcite and lies in a generous piece of fossiliferous matrix. Ammonites from this zone are extremely difficult to find at this locality thesedays from overcollecting by academics, museums and private collectors alike. Also, the lack of erosion is another factor. Approximately 173 million years old.