Stephanoceras sp
Ammonite
Middle Jurassic – Bajocian
Evircy, France

Specimen is 2 7/8” in diameter.

Stephanoceras is a genus of ammonite known from the Jurassic of various parts of the world (Canada, Mexico, Tunisia, Saudi Arabia, and Russia).  It is used as an index fossil to mark a particular interval of geologic time within the Jurassic period.

Presented is a beautiful example of a classic ammonite preserved in matrix.