Asteroceras obtusum Ammonite
Asteroceras obtusum sp. (J.Sowerby)
Charmouth, Dorset England
Approx 189-196 million years old
This Asteroceras ammonite is nicely situated on its matrix which has been cut with a flat base ready for display.
The ammonite measures approx. 6.5 cm at its widest point and the base is approx. 8 cm wide.