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As of September 2016, the International Union for Conservation of Nature (IUCN) lists 65 extinct fish species, 87 possibly extinct fish species, and six extinct in the wild fish species. [ 1 ] [ 2 ] Cartilaginous fish
Leedsichthys is an extinct genus of pachycormid fish that lived in the oceans of the Middle to Late Jurassic. [1] It is the largest ray-finned fish, and amongst the largest fish known to have ever existed. [2] The first remains of Leedsichthys were identified in the nineteenth century.
Sacabambaspis is an extinct genus of jawless fish that lived in the Ordovician period. Sacabambaspis lived in shallow waters on the continental margins of Gondwana . [ 1 ] It is the best known arandaspid with many specimens known.
Rhenanida ("Rhine fish") were flattened, ray-like, bottom-dwelling predators with large, upturned mouths that lived in marine environments. The rhenanids were once presumed to be the most primitive, or at least the closest to the ancestral placoderm, as their armour was made of unfused components—a mosaic of tubercles—as opposed to the ...
The fish was thought extinct on the Great Lakes for nearly 40 years, and not known to exist in Lake Superior. ... "The Great Lakes will never go back to what they were 200 years ago," he said ...
Eight of the extinct bird species were found in Hawaii, including the Po`ouli, which was last seen in 2004. The Po`ouli is the most recently seen species of all 21 animals on the list.
Tiktaalik provides insights on the features of the extinct closest relatives of the tetrapods. Tiktaalik was a large fish: the largest known fossils have an estimated length of 2.75 m (9.02 feet), [2] with the longest lower jaws reaching a length of 31 centimetres (1.0 ft). [1]
The BBC notes, "of the 41 communities researchers studied, arapaima populations were extinct in eight of them." And the giant fish, which typically weighs in at more than 400 pounds, is rapidly ...