| Callitriche christensenii | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Plantaginaceae |
| Genus: | Callitriche |
| Species: | C. christensenii |
| Binomial name | |
| Callitriche christensenii Christoph. | |
Callitriche christensenii is a species of plant in the family Plantaginaceae. It is endemic to Saint Helena. Its natural habitats are rivers, freshwater marshes, and freshwater springs.
Elasmobranchii is a subclass of Chondrichthyes or cartilaginous fish, including sharks, rays, skates, and sawfish. Members of this subclass are characterised by having five to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins and small placoid scales on the skin. The teeth are in several series; the upper jaw is not fused to the cranium, and the lower jaw is articulated with the upper. The details of this jaw anatomy vary between species, and help distinguish the different elasmobranch clades. The pelvic fins in males are modified to create claspers for the transfer of sperm. There is no swim bladder; instead, these fish maintain buoyancy with large livers rich in oil.
Macrochelys is a genus of very large freshwater turtles in the family Chelydridae from Southeastern United States. Only a single extant species was recognized until a 2014 study divided it into two, or possibly three species.
Biddle Street, Yatton is a 44.8 hectare biological Site of Special Scientific Interest (SSSI) near the village of Yatton in North Somerset, notified in 1994.
The Everglades crayfish, sometimes called the Florida crayfish, the blue crayfish, the electric blue crayfish, or the sapphire crayfish, is a species of freshwater crayfish endemic to Florida in the United States. Its natural range is the area east of St. Johns River and all of Florida from Levy County and Marion County southwards, as well as on some of the Florida Keys. It is included on the IUCN Red List as a species of Least Concern. The blue crayfish is frequently kept in freshwater aquaria. In the wild, this species varies from brown-tan to blue, but an aquarium strain has been selectively bred to achieve a brilliant cobalt blue color.
The Australian angelshark is a species of angelshark, family Squatinidae, found in the subtropical waters of southern Australia from Western Australia to New South Wales between latitudes 18°S and 41°S, at depths down to 255 m (840 ft). Its length is up to 1.52 m (5 ft). Reproduction is ovoviviparous, with up to 20 pups in a litter.
The freshwater pearl mussel is an endangered species of freshwater mussel, an aquatic bivalve mollusc in the family Margaritiferidae.
Setzer's pygmy mouse is a species of rodent in the family Muridae. It is found in Botswana, Namibia, and Zambia. Its natural habitats are dry savanna, rivers, freshwater lakes, and intermittent freshwater lakes.
Ptychadena erlangeri is a species of frog in the family Ptychadenidae. It is endemic to Ethiopia.
Swinhoe's rail is a species of bird in the family Rallidae occurring in northeastern Asia. It was known only in two locations in Manchuria and southeastern Siberia, separated by more than 1000 km; however, in 2018, a new breeding population was found in the Amur region, situated between the two. Its natural habitats are swamps, freshwater lakes, freshwater marshes, and arable land. It is the world's smallest rail at 13 cm (5.2 in) and 24.5 grams. It is threatened by habitat loss, and considered a vulnerable species on the IUCN Red List.
The black spine-neck swamp turtle, also commonly known as the spiny-neck turtle or Spix's sideneck turtle, is a species of turtle in the family Chelidae. The species is endemic to South America, specially in the Southern Cone region.
The yellow-blotched map turtle, or yellow-blotched sawback, is a species of turtle in the family Emydidae. It is part of the narrow-headed group of map turtles, and is endemic to the southern United States.
The East African black mud turtle, also known as the Pan terrapin, is a species of turtle in the family Pelomedusidae, native to eastern and southeastern Africa.
The red-headed Amazon side-necked turtle, red-headed river turtle, or red-headed sideneck is a species of turtle in the family Podocnemididae. It is found in the Amazon basin in Brazil, Colombia, and Venezuela.
Austropyrgus dyerianus is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk or micromollusk in the Hydrobiidae family. This species is endemic to Australia.
Austropyrgus grampianensis is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk or micromollusk in the Hydrobiidae family. This species is endemic to western Victoria, Australia. It is known from two small creeks in the Grampians.
Callitriche is a genus of largely aquatic plants known as water-starwort. Previously, it was the only genus in the family Callitrichaceae. However, according to the APG II system this family is now included in the Plantaginaceae. The family name Callitrichaceae retains its status as nomen conservandum.
Callitriche antarctica, commonly known as the Antarctic water-starwort, is a small, prostrate plant with tiny yellow flowers in the family Plantaginaceae. It is found in wet places on many subantarctic islands and has a wide circumantarctic distribution, something reflected in its specific epithet.
Gabbia is a genus of a freshwater snails with an operculum, aquatic prosobranch gastropod mollusks in the family Bithyniidae.
Callitriche pulchra, the beautiful water starwort, is a plant that was listed on the 2012 IUCN Red List of Threatened Species, based on specimens gathered on Gavdos island, Crete by H. D. Schotsman. Additionally, two of Pamapani's specimens were identified at Le Due Palme. Schotsman thereafter classified in 1968 in three different ponds located in Cyrenaica. In 2015 Callitriche pulchra was detected in Cyprus, somewhat reducing its endangered status. Other locations it has been encountered include Greece, Libya and Syria.
Callitriche hamulata is a species of flowering plant belonging to the family Plantaginaceae.
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