This is a very rich ammonite concretion with Arnioceras semicostatum from the Yorkshire Coast. The largest ammonite has a diameter of about 50 mm, the smallest measures about 17 mm. The piece offers a very pleasing distribution pattern of the ammonites. | |||
Location: | Aldbrough, Holderness Coast, Yorkshire, UK | ||
Size Matrix : | about 107 x 98 mm | ||
Age: | Jurassic, lower Lias, Semicostatum Zone (About 190 Ma) |