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Parapsephurus is an extinct genus of paddlefish in the family Polyodontidae. Currently the only known species in this genus is the type species, Parapsephurus willybemisi. P. willybemisi is known a nearly complete specimen from the Tanis locality of the Hell Creek Formation in North Dakota, USA, which dates to the late Maastrichtian stage of the Late Cretaceous, approximately 66 million years ago.
In 1797, French naturalist Bernard Germain de Lacépède established the genus Polyodon for paddlefish, [4] which today includes a single extant species, Polyodon spathula. Lacépède disagreed with Pierre Joseph Bonnaterre 's description in Tableau encyclopédique et méthodique (1788), which had suggested that paddlefish were a species of shark.
The paddlefish had likely been suffering for a very long time, a fishing guide said. Fishermen save fish from surprising, painful situation. ‘Probably happy to be caught’
Critically endangered (CR) species face an extremely high risk of extinction in the wild. As of July 2017, the International Union for Conservation of Nature (IUCN) listed 1,000 critically endangered fish species, including 87 which are tagged as possibly extinct. [1] [2] Of all evaluated fish species, 3.0% are listed as critically endangered ...
The American paddlefish is the only species of paddlefish living after the extinction of the Chinese paddlefish, which was estimated to be extinct by 2005, and no later than by 2010. [6] Sturgeons are considered by IUCN to be the most critically endangered group of species in the world based on over 85% of sturgeon species being at risk of ...
A rare snail species that had likely become extinct in the wild was recently reintroduced to the Hawaiian landscape.
The Chinese paddlefish was officially declared extinct in 2022, with an estimated time of extinction to be by 2005, and no later than 2010, although it had become functionally extinct by 1993. [ 1 ] [ 4 ] The main cause of its extinction was the construction of the Gezhouba and Three Gorges dams , causing population fragmentation and blocking ...
Watch live as the Kilauea volcano erupts on Hawaii's Big Island after a three-month pause. This live feed, which began late on Saturday night local time (10 June) from the, shows lava spewing from ...