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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 ...
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.
The Chinese paddlefish was last seen alive in 2003, and was considered to have gone extinct sometime between 2005 and 2010 by the Yangtze River Fisheries Research Institute in their 2019 report. Hybridization
The family Polyodontidae comprises six known species: three fossil species from western North America, one fossil species from China, [16] one recently extinct species from China (the Chinese paddlefish, Psephurus gladius; last recorded 2003), [19] [20] and the single extant species, the American paddlefish, native to the Mississippi River ...
[10] [11] [16] Although the American paddlefish is one of the largest freshwater fishes in North America, their recorded lengths and weights fell short in comparison to the larger Chinese paddlefish. American paddlefish commonly reach 5 ft (1.5 m) or more in length and can weigh more than 60 lb (27 kg).
Protopsephurus is an extinct genus of paddlefish containing the single species Protopsephurus liui, known from the Yixian, Jiufotang and Huajiying formations in Liaoning, northern China from the Barremian to Aptian ages of the Early Cretaceous period around 125-120 million years ago. [1] [2] It is currently the oldest and most basal paddlefish ...
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 ...
There are 64 extinct species, 85 possibly extinct species, and six extinct in the wild species of ray-finned fish evaluated by the IUCN. ... Chinese paddlefish ...