Hello, here is a Big! very nice and 100% natural Pygurus sp. Sea Urchin or Sand Dollar like fossil that has been polished! It was quarried in the Morondava River Basin, near the town of Sakaraha, Southwest, Madagascar.
It has great colors and definition! This "rock" was a living Animal during the Jurassic period, Oxfordion Age a Crazy! 161 to 156 million years ago.
The fossil measures a nice! 8.3cm or 3 5/16" at its biggest or from opposing side to side.