| Gibbus lyonetianus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Order: | Stylommatophora |
| Family: | Streptaxidae |
| Genus: | † Gibbus |
| Species: | †G. lyonetianus |
| Binomial name | |
| †Gibbus lyonetianus Pallas, 1780 | |
Gibbus lyonetianus is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Streptaxidae.
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological species. A series of Regional Red Lists, which assess the risk of extinction to species within a political management unit, are also produced by countries and organizations.
An IUCN Red List Critically Endangered species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of December 2023, of the 157,190 species currently on the IUCN Red List, 9,760 of those are listed as Critically Endangered, with 1,302 being possibly extinct and 67 possibly extinct in the wild.
Unio is a genus of medium-sized freshwater mussels, aquatic bivalve mollusks in the family Unionidae, the river mussels. They are found throughout Europe, Africa, and the Middle East, with some species introduced to East Asia. Fossil species are also known from the Jurassic of North America.
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.
Vanderhaege's toad-headed turtle is a species of turtle in the family Chelidae. The species is endemic to South America.
The Lake Pedder planarian is a species of invertebrate in the family Dugesiidae.
Gibbus is an extinct genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Streptaxidae.
Partula taeniata, common name the Moorean viviparous tree snail, is a species of terrestrial gastropod in the Partulidae family. It is endemic to French Polynesia.
Haplophthalmus is a genus of woodlice in family Trichoniscidae. It contains 47 described species, of which two are listed as vulnerable species on the IUCN Red List – Haplophthalmus abbreviatus and Haplophthalmus rhinoceros.
Procambarus gibbus, the Muckalee crayfish, is a species of crayfish in the family Cambaridae. It is endemic to the Flint River drainage in the U.S. state of Georgia. The common name of the species refers to the Muckalee Creek in Sumter County, Georgia, from where the first specimens were collected.
The humpback red snapper, the paddletail, paddletail snapper or hunchback snapper, is a species of marine ray-finned fish, a snapper belonging to the family Lutjanidae. It has a wide Indo-West Pacific distribution. It is a commercially important species, as well as being sought after as a game fish. It is also a popular species for display in public aquaria. It has been reported to cause ciguatera poisoning.
Chlorurus gibbus, the heavybeak parrotfish, gibbus parrotfish or Red Sea steephead parrotfish, is a species of marine ray-finned fish, a parrotfish from the family Scaridae. It is found in the Red Sea.
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