† Bembexia is a genus of fossil sea snails, marine gastropod mollusks.
This genus is placed in the subfamily Eotomariinae, of the family Eotomariidae.
These snails have been interpreted as herbivorous, probably grazing on algae.
These fossils are found in sedimentary rocks deposited from 340 to 420 million years ago, including the Hamilton Group of eastern North America.
Other fossil sites include Alaska, Western Europe including the UK, Venezuela, China and Australia.