Here is a large and spectacular preserved fossil ouster of the species Arctostrea gregarea. The Arctostrea gregarea itself is about 83 mm wide. | |||
Location: | Gerstetten near Nattheim, Baden-Württemberg, Germany | ||
Matrix Size : | about 73 x 83 x 64 mm | ||
Age: | Upper Jurassic, Tithonian , Mergelstetten-Formation (about 150 Ma) |