Retusidae
Encyclopedia
Retusidae is a family
of small sea snail
s, marine
opisthobranch gastropod mollusks. They are headshield slugs, in the clade
Cephalaspidea
.
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
of small sea snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
s, 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...
opisthobranch gastropod mollusks. They are headshield slugs, in the clade
Clade
A clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...
Cephalaspidea
Cephalaspidea
The suborder Cephalaspidea, also known as the headshield slugs and bubble snails, is a clade of sea slugs and bubble snails, marine gastropod mollusks within the larger clade Euopisthobranchia....
.
Genera
Genera within the family Retusidae include:- Coleophysis
- Cylichnina Monterosato, 1884
- Pyrunculus Pilsbry, 1895
- Retusa T. Brown, 1827
- Rhizorus Mountfort, 1810
- Volvulella Newton, 1891