Radula visianica | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Division: | Marchantiophyta |
Class: | Jungermanniopsida |
Order: | Porellales |
Family: | Radulaceae |
Genus: | Radula |
Species: | R. visianica |
Binomial name | |
Radula visianica C.Massal. | |
Radula visianica is a species of liverwort in the Radulaceae family. It is European Alps endemic. It was thought to be extinct since 1938 but was rediscovered in 2014 in Austria. [2] [1]
The radula is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus. The radula is unique to the molluscs, and is found in every class of mollusc except the bivalves, which instead use cilia, waving filaments that bring minute organisms to the mouth.
The rusty-tailed flycatcher is a small passerine bird in the flycatcher family Muscicapidae. It is found mainly in the northern regions of the Indian Subcontinent and some parts of southwest India, as well as pockets of Central Asia including Uzbekistan and Tajikistan. The species is partially migratory, with the Central Asian populations migrating to India, as far as the southwest Indian coast along the Arabian Sea, to Karnataka and Kerala.
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This article is a list of biological species, subspecies, and evolutionary significant units that are known to have become extinct during the Holocene, the current geologic epoch, ordered by their known or approximate date of disappearance from oldest to most recent.
Aylacostoma guaraniticum is a species of freshwater snail, an aquatic gastropod mollusc in the family Thiaridae. This species disappeared after the building of the Yacyretá Dam on the Paraná River, in between Argentina and Paraguay. Although listed as extinct in the wild by the IUCN, no captive population survives meaning that it now is entirely extinct.
Aylacostoma stigmaticum is a species of freshwater snail, aquatic gastropod mollusc in the family Thiaridae. This species disappeared after the building of the Yacyretá Dam on the Paraná River, in between Argentina and Paraguay. Although listed as extinct in the wild by the IUCN, no captive population survives meaning that it now is entirely extinct.
Madagasikara spinosa is a species of tropical freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Pachychilidae.
Radula jonesii is a species of liverwort in the family Radulaceae. It is known from a few locations on Madeira and one location on Tenerife. The populations are small and vulnerable.
Radula is a genus of liverwort, and is the only genus in family Radulaceae.
Chrysomallon squamiferum, commonly known as the scaly-foot gastropod, scaly-foot snail, sea pangolin, or volcano snail is a species of deep-sea hydrothermal-vent snail, a marine gastropod mollusc in the family Peltospiridae. This vent-endemic gastropod is known only from deep-sea hydrothermal vents in the Indian Ocean, where it has been found at depths of about 2,400–2,900 m (1.5–1.8 mi). C. squamiferum differs greatly from other deep-sea gastropods, even the closely related neomphalines. In 2019, it was declared endangered on the IUCN Red List, the first species to be listed as such due to risks from deep-sea mining of its vent habitat.
Careoradula perelegans is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusk in the family Streptaxidae.
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