Hi Bert, Tarquin and Adrian,
I'm well aware of the Archimedes genus ending with the Permian extinction... but this is from an outcrop near to Fiddler's Elbow Quarry, Glos. Bajocian-Bathonian strata - Lower Jurassic.... unless somebody gets a kick out of burying a straw coloured Archimedes specimen (like the other fossils found concurrently) in the vain hope someone will discover it with time in the outcropping gravels, to confuse someone, and with the hope that it will be published online/in a paper somewhere...it seems a scheme fraught with danger of it never being discovered? Specimen is so unusual, but definately Archimedes genus it seems. I wasn't aware of Archimedes having been discovered in the UK? I have several specimens, all pale grey in colour, from North America. Can you provide a reference to UK forms. I cannot find any reference at all, pdf or otherwise, of UK based forms... I include some photos for your perusal... I await your opinions guyscheers, Aron
"I think I could turn and live with animals, they are so placid and self contained..."