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Showing results for tags 'cyrtospirifer'.
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I've always wanted one of these and it's just arrived! I spotted it on the usual auction site where it was being sold by an antique seller as a possible fish in slate . It is true slate but is a legendary Delabole Butterfly, a metamorphosed Cyrtospirifer extensus, almost certainly from the Delabole slate quarry in Cornwall, UK. Although quite famous and widely referred to, there's not that much solid information. They appear to have been sold to tourists, largely in the 19th century and this split specimen seems typical. I think they're quite rare though - most photographed specimens seem to be in museums. Many years ago, I wandered around the edge of the quarry and managed to find one small fragment in the waste. Devonian, Frasnian, about 4" across. ,