The Collaborative International Dictionary
Wikipedia
Aporrhais
Aporrhais is a genus of medium-sized sea snails, marine gastropod mollusks in the family Aporrhaidae and the superfamily Stromboidea.
The genus is known from the Triassic to the Recent periods (age range: 205.6 to 0.0 million years ago). Fossils of species within this genus have been found all over the world.