Semicassis undulata
Encyclopedia
Semicassis undulata is a medium-sized species
of sea snail
, a marine
gastropod mollusc in the subfamily Cassinae
.
This is a Mediterranean species. It has sometimes been confused with the rather similar Western Atlantic
species, Semicassis granulata.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of sea snail
Sea snail
Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....
, a marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...
gastropod mollusc in the subfamily Cassinae
Cassinae
Cassidae is a taxonomic family of medium-sized, large and sometimes very large sea snails commonly called helmet snails or bonnet snails. These are marine gastropod mollusks in the superfamily Tonnoidea and the clade Littorinimorpha....
.
This is a Mediterranean species. It has sometimes been confused with the rather similar Western Atlantic
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...
species, Semicassis granulata.