1.9" Pavlovia Ammonite With Fossil Oysters - Russia

This is a rather uncommon Pavlovia raricostata ammonite from the Yatriya River in Siberia, Russia. They have a distinctive ribbed shell and are Late Jurassic (Tithonian Stage) or approximately 150 million years old. The ammonite has been completely removed from the surrounding rock.

One interesting aspect of this piece is there is a pair of fossil oysters attached, one on each side of the fossil.