Customize your Medscape account with the health plans you accept, so that the information you need is saved and ready every time you look up a drug on our site or in the Medscape app. Easily compare tier status for drugs in the same class when considering an alternative drug for your patient.
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.
(Those snails which do not have a shell or only a very small shell are usually called slugs.) Some people mistake water snails (also called sea-snails) as a specie of a snail but that is not true. Source(s): http://en.wikipedia.org/wiki/Snail.uscav8r Â· 8 years ago. Thumbs up.Those snails which do not have a shell or only a very small shell are usually called slugs.) Some people mistake water snails (also called sea-snails) as a specie of a snail but that is not true. Source(s): http://en.wikipedia.org/wiki/Snail. uscav8r Â· 8 years ago. Thumbs up.