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Salmoniformes. Extinct species. Longjaw cisco (Coregonus alpenae) Coregonus bezola. Coregonus fera. Coregonus gutturosus. Gravenche (Coregonus hiemalis) Deepwater cisco (Coregonus johannae)
Marine mammals comprise over 130 living and recently extinct species in three taxonomic orders. The Society for Marine Mammalogy, an international scientific society, maintains a list of valid species and subspecies, most recently updated in October 2015. [1] This list follows the Society's taxonomy regarding and subspecies.
Near threatened (NT): 345 species. Least concern (LC): 3,306 species. Data deficient (DD): 872 species. Mammalian species (IUCN, 2020-1) 5850 extant species have been evaluated. 4978 of those are fully assessed [a] 3651 are not threatened at present [b] 1244 to 2116 are threatened [c] 81 to 83 are extinct or extinct in the wild:
The list of extinct cetaceans features the extinct genera and species of the order Cetacea. The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals, the even-toed ungulates. The earliest cetaceans were still hoofed mammals. These early cetaceans became gradually better adapted for swimming than for walking on land ...
It is considered the most endangered marine mammal in the world. The vaquita has been listed as critically endangered by the IUCN Red List of Threatened Species since 1996. [2] The vaquita is at risk of extinction due to its small population size. [33] [page needed] It was approximated at one point that there were 150 individuals. [21]
This is an accepted version of this page This is the latest accepted revision, reviewed on 15 September 2024. Extinct species of marine mammal Not to be confused with Steller sea lion. Steller's sea cow Temporal range: Pleistocene – C. E. 1768 Skeleton at the Finnish Museum of Natural History Conservation status Extinct (1768) (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom ...
Fordonia leucobalia (White-bellied mangrove snake) Myron. Myron karnsi. Myron resetari. Myron richardsonii. Hydrophiinae (Sea snakes) Aipysurus. Aipysurus eydouxii (Spine-tailed sea snake) Aipysurus laevis (Olive sea snake)
End-Jurassic (Tithonian) 145 Ma. No longer regarded as a major extinction but rather a series of lesser events due to bolide impacts, eruptions of flood basalts, climate change and disruptions to oceanic systems [16] Pliensbachian-Toarcian extinction (Toarcian turnover) 186-178 Ma.