| Fluvidona simsoniana | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Tateidae |
| Genus: | Fluvidona |
| Species: | †F. simsoniana |
| Binomial name | |
| †Fluvidona simsoniana Brazier, 1875 | |
Fluvidona simsoniana is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusc or micromollusc in the family Tateidae. This species is endemic to Australia. [1]
A species that is extinct in the wild (EW) is one that has been categorized by the International Union for Conservation of Nature as only consisting of living members kept in captivity or as a naturalized population outside its historic range. Classification requires exhaustive surveys conducted within the species' known habitat with consideration given to seasonality, time of day, and life cycle. Once a species is classified as EW, the only way for it to be downgraded is through reintroduction.
The Daghestan pine vole is a species of rodent in the family Cricetidae. It is found in Russia, Georgia, Armenia, and Azerbaijan.
The Somali hedgehog is a species of mammal in the family Erinaceidae. It is endemic to Somalia and Somaliland. The Somali hedgehog is nocturnal.
The Oriental shrew is a species of mammal in the family Soricidae. It is endemic to Indonesia.
The pale gray shrew is a species of mammal in the family Soricidae. It is endemic to Pakistan and is distributed in the Shigar valley and the western edge of Deosai.
Portenko's shrew is a species of mammal in the family Soricidae that is endemic to Russia.
Speleoperipatus is a monospecific genus of velvet worm in the Peripatidae family, containing the single species Speleoperipatus spelaeus. This species is a pale greenish yellow, almost white, with 22 or 23 pairs of legs and no eyes. Specimens range from 27 mm to 34 mm in length. The minimum number of leg pairs found in this species (22) is also the minimum number found in the neotropical Peripatidae. This velvet worm is viviparous, with mothers supplying nourishment to their embryos through a placenta.
Fluvidona anodonta or more commonly known as the North Pine River freshwater snail is a species of minute freshwater snail that is endemic to Australia. Originally discovered in 1892 by Hedley & Musson, the snail is highly elusive and only has been sighted four times since its discovery. The snail is 2 mm long and 1 mm wide with the shell colouring being of a yellow-whiteish shade. Fluvidona anodonta resides within the City of Moreton Bay, specifically in four river systems within the D'Aguilar National Park, Queensland. The four river systems are the South Pine River headwaters, the North Pine River headwaters, Kobble Creek and Low Branch Creek. The snail is found under deeply submerged rocks within permanent freshwater systems.
Fluvidona dulvertonensis was a species of minute freshwater snail with an operculum, an aquatic gastropod mollusc or micromollusc in the family Tateidae. This species was endemic to Australia but was declared extinct in 1996.
Fluvidona petterdi is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusc or micromollusc in the family Tateidae. This species is endemic to Australia.
Stygobromus is a genus of amphipod crustaceans that live in subterranean habitats. The majority of the listed species are endemic to North America, a smaller number of species are also known from Eurasia. Most of the North American species live in areas which were not covered by the Laurentide Ice Sheet, although a few species seem to have survived under the ice. A number of species are on the IUCN Red List as endangered species (EN) or vulnerable species (VU); one species, S. lucifugus, is extinct.
A vulnerable species is a species which has been categorized by the International Union for Conservation of Nature as being threatened with extinction unless the circumstances that are threatening its survival and reproduction improve.
Fluvidona is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Tateidae. Fluvidona species are endemic to northern New South Wales and southern Queensland, Australia.
Fluvidona dorrigoensis is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusc or micromollusc in the family Tateidae.
Fluvidona griffithsi is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusc or micromollusc in the family Tateidae. This species is endemic to southern Queensland, Australia.
Fluvidona orphana is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusc or micromollusc in the family Tateidae.
Endangered species, as classified by the International Union for Conservation of Nature (IUCN), are species which have been categorized as very likely to become extinct in their known native ranges in the near future. On the IUCN Red List, endangered is the second-most severe conservation status for wild populations in the IUCN's schema after critically endangered. In 2012, the IUCN Red List featured 3,079 animal and 2,655 plant species as endangered worldwide. The figures for 1998 were 1,102 and 1,197 respectively.
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