Striadorbis
Encyclopedia
Striadorbis is a genus
of minute freshwater snail
s that have an operculum
, aquatic
gastropod molluscs or micromolluscs in the family
Glacidorbidae
.
and western Victoria
, as per Ponder & Avern, 2000.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of minute freshwater snail
Freshwater snail
A freshwater snail is one kind of freshwater mollusc, the other kind being freshwater clams and mussels, i.e. freshwater bivalves. Specifically a freshwater snail is a gastropod that lives in a watery non-marine habitat. The majority of freshwater gastropods have a shell, with very few exceptions....
s that have an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...
, aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
gastropod molluscs or micromolluscs in the family
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...
Glacidorbidae
Glacidorbidae
The Glacidorbidae is a taxonomic family of freshwater snails, gastropod mollusks in the clade Panpulmonata.- 2005 taxonomy :Glacidorbidae is the only family in the superfamily Glacidorboidea. Glacidorboidea has been classified within the informal group Lower Heterobranchia in the taxonomy of...
.
Species
Species within the genus Striadorbis include:- Striadorbis janetae
- Striadorbis pedderi
- Striadorbis spiralis
Distribution
Species in this genus are found in TasmaniaTasmania
Tasmania is an Australian island and state. It is south of the continent, separated by Bass Strait. The state includes the island of Tasmania—the 26th largest island in the world—and the surrounding islands. The state has a population of 507,626 , of whom almost half reside in the greater Hobart...
and western Victoria
Victoria (Australia)
Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....
, as per Ponder & Avern, 2000.