This is a nice and large Sigaloceras calloviense from the Jurrasic of Ashton Keynes. The massive ammonite shows a fine preservation of the ornamentation. | |||
Location: | Ashton Keynes, England | ||
| Size of Ammonite: | about 101 mm | ||
| Age: | Middle Jurasic, Kallaways Beds, Callovian (about 164 Mill. Years) | ||