Are Pearls in old Fossil Oyster Shells?

Here is Part 2 where we start to crack into a few Oysters:
   • Hunting Fossil Pearls - We Open Two F...  

For the videos where we found these fossils and many more, look here:
   • Amazing River Fossil hunting trip Mar...  
   • River Fossil Hunt Part 1 - May 2016 k...  
   • River Fossil Hunt Part 2 - May 2016 k...  
   • Fossil Hunting Trip Aug. '16 - Part 1...  
   • Fossil Hunting Trip Aug. '16 - Part 2  

I have 6 examples of the oyster: Exogyra Ponderosa

They have the bottom shell as well as the top. They are complete. So there is a chance they can contain a fossil pearl within!!!

Hopefully this link takes you directly to the topic:
http://www.thefossilforum.com/index.p...