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The carnivorous snails have tongues that are covered with thousands of tiny teeth to tear apart food. The gastropod fossils from Jacksboro, TX shown below are from the Pennsylvanian, Finis formation, and these gastropods lived about 300 million years ago.
The African Giant Snail â The Largest Snail On Earth. The African giant snail, also called as the giant tiger land snail, is the largest snail from its family. The Giant Ghana snail is native to the forest of Ghana, Africa. Those snails are hermaphrodites, like almost all pulmonate gastropods. The shells of these snails grow s to 18 centimeters of length with a diameter of 9 centimeters, however, there are also bigger examples.