![File:Texigryphaea mucronata (fossil oyster) (Walnut Formation, Lower Cretaceous; Bell County, Texas, USA) 13.jpg - Wikimedia Commons File:Texigryphaea mucronata (fossil oyster) (Walnut Formation, Lower Cretaceous; Bell County, Texas, USA) 13.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/c/c0/Texigryphaea_mucronata_%28fossil_oyster%29_%28Walnut_Formation%2C_Lower_Cretaceous%3B_Bell_County%2C_Texas%2C_USA%29_13.jpg/1200px-Texigryphaea_mucronata_%28fossil_oyster%29_%28Walnut_Formation%2C_Lower_Cretaceous%3B_Bell_County%2C_Texas%2C_USA%29_13.jpg)
File:Texigryphaea mucronata (fossil oyster) (Walnut Formation, Lower Cretaceous; Bell County, Texas, USA) 13.jpg - Wikimedia Commons
Gigantic Fossil Oyster Shell. Inoceramus grandis. Cretaceous. Smoky | Lot #72058 | Heritage Auctions
![A LARGE FOSSIL OYSTER SHELL | Natural History; Including Fossils, Minerals, & Meteorites | 2020 | Sotheby's A LARGE FOSSIL OYSTER SHELL | Natural History; Including Fossils, Minerals, & Meteorites | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/4b/f8/f7cc71594b988691b312224ee5ae/023n10486-bmjm6.jpg)
A LARGE FOSSIL OYSTER SHELL | Natural History; Including Fossils, Minerals, & Meteorites | 2020 | Sotheby's
O.T. cristagalli (Carinated Oyster Fossil). | Collections Online - Museum of New Zealand Te Papa Tongarewa
![Wooster's Fossil of the Week: A Cretaceous oyster with borings and bryozoans from Mississippi | Wooster Geologists Wooster's Fossil of the Week: A Cretaceous oyster with borings and bryozoans from Mississippi | Wooster Geologists](http://woostergeologists.scotblogs.wooster.edu/files/2014/11/Interior-left-111914.jpg)
Wooster's Fossil of the Week: A Cretaceous oyster with borings and bryozoans from Mississippi | Wooster Geologists
![Wooster's Fossils of the Week: Mystery fossil solution — an oyster from the Middle Jurassic of southern England | Wooster Geologists Wooster's Fossils of the Week: Mystery fossil solution — an oyster from the Middle Jurassic of southern England | Wooster Geologists](http://woostergeologists.scotblogs.wooster.edu/files/2016/08/Mystery-fossils-081916-585.jpg)
Wooster's Fossils of the Week: Mystery fossil solution — an oyster from the Middle Jurassic of southern England | Wooster Geologists
![Wooster's Fossil of the Week: A Cretaceous oyster with borings and bryozoans from Mississippi | Wooster Geologists Wooster's Fossil of the Week: A Cretaceous oyster with borings and bryozoans from Mississippi | Wooster Geologists](http://woostergeologists.scotblogs.wooster.edu/files/2014/11/Exogyra-costata-Prairie-Bluff-Fm-Maastrichtian-585.jpg)