Here is a nice ammonite piece with Grammoceras thouarsense from Ravenscar in Yorkshire. The largenst ammonite has a diameter of about 33 mm. | |||
Location: | Ravenscar, Yorkshire, England | ||
Size Matrix : | about 86 x 53 mm | ||
Age: | Jurassic, lower Lias, G. thouarsense Zone(About 190 Ma) |