![File:Crommium angustatum fossil snail shell (Lower Oligocene; Gaas, Aquitaine, France) 1 (17125513006).jpg - Wikimedia Commons File:Crommium angustatum fossil snail shell (Lower Oligocene; Gaas, Aquitaine, France) 1 (17125513006).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/d/d6/Crommium_angustatum_fossil_snail_shell_%28Lower_Oligocene%3B_Gaas%2C_Aquitaine%2C_France%29_1_%2817125513006%29.jpg)
File:Crommium angustatum fossil snail shell (Lower Oligocene; Gaas, Aquitaine, France) 1 (17125513006).jpg - Wikimedia Commons
![Cretaceous amber fossils highlight the evolutionary history and morphological conservatism of land snails | Scientific Reports Cretaceous amber fossils highlight the evolutionary history and morphological conservatism of land snails | Scientific Reports](https://media.springernature.com/lw685/springer-static/image/art%3A10.1038%2Fs41598-019-51840-3/MediaObjects/41598_2019_51840_Fig7_HTML.png)
Cretaceous amber fossils highlight the evolutionary history and morphological conservatism of land snails | Scientific Reports
![Fossil Snail Shells Offer New Tool for Determining Ancient Ocean Chemistry | Jackson School of Geosciences | The University of Texas at Austin Fossil Snail Shells Offer New Tool for Determining Ancient Ocean Chemistry | Jackson School of Geosciences | The University of Texas at Austin](https://www.jsg.utexas.edu/news/files/Gastropod.-2.jpg)
Fossil Snail Shells Offer New Tool for Determining Ancient Ocean Chemistry | Jackson School of Geosciences | The University of Texas at Austin
![File:Crommium angustatum fossil snail shell (Lower Oligocene; Gaas, Aquitaine, France) 3 (17149862012).jpg - Wikimedia Commons File:Crommium angustatum fossil snail shell (Lower Oligocene; Gaas, Aquitaine, France) 3 (17149862012).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Crommium_angustatum_fossil_snail_shell_%28Lower_Oligocene%3B_Gaas%2C_Aquitaine%2C_France%29_3_%2817149862012%29.jpg/1200px-Crommium_angustatum_fossil_snail_shell_%28Lower_Oligocene%3B_Gaas%2C_Aquitaine%2C_France%29_3_%2817149862012%29.jpg)
File:Crommium angustatum fossil snail shell (Lower Oligocene; Gaas, Aquitaine, France) 3 (17149862012).jpg - Wikimedia Commons
![Figure: an endocast of a Middle Miocene land snail, lying in situ at... | Download Scientific Diagram Figure: an endocast of a Middle Miocene land snail, lying in situ at... | Download Scientific Diagram](https://www.researchgate.net/publication/282977175/figure/fig3/AS:340021275054084@1458078797388/Figure-an-endocast-of-a-Middle-Miocene-land-snail-lying-in-situ-at-the-fossil-site.png)
Figure: an endocast of a Middle Miocene land snail, lying in situ at... | Download Scientific Diagram
![Multimedia Gallery - Fossil snails known as turritellid gastropods; they're about 13 million years old. | NSF - National Science Foundation Multimedia Gallery - Fossil snails known as turritellid gastropods; they're about 13 million years old. | NSF - National Science Foundation](https://www.nsf.gov/news/mmg/media/images/past_life1_h.jpg)