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The following list is incomplete by necessity, since the majority of extinctions are thought to be undocumented, and for many others there isn't a definitive, widely accepted last, or most recent record. According to the species-area theory, the present rate of extinction may be up to 140,000 species per year. [1]
Griesbachian-Dienerian boundary-event 252 Late eruptions of the Siberian Traps [22] Permian: Permian–Triassic extinction event: 252 Ma Large igneous province (LIP) eruptions [23] from the Siberian Traps, [24] an impact event (the Wilkes Land Crater), [25] an Anoxic event, [26] an Ice age, [27] or other possible causes End-Capitanian ...
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.
Fewer vessels will be required to reduce their speed, which is likely to contribute to the extinction of the North Atlantic right whale, a species that is vulnerable to extinction and classified ...
Gastornis goes extinct. Basilosaurus evolves. c. 37 Ma – First Nimravids. c. 33.9 Ma – End of Eocene, start of Oligocene epoch. c. 35 Ma – Grasslands first appear. Glyptodonts, ground sloths, peccaries, dogs, eagles, and hawks evolve. c. 33 Ma – First thylacinid marsupials evolve. c. 30 Ma – Brontotheres go extinct. Pigs evolve.
The whale’s decomposing body is located at what is called the Clayoquot Slope Bullseye site, where Ocean Networks Canada (ONC) scientists monitor methane gas escaping the seafloor. In 2012 and ...
Observations indicate that in the years since the mega-shark's extinction, baleen whales' physical mass has increased significantly. They can now reach up to almost a hundred feet in length.
The decline of global whale populations Blue whale populations have declined dramatically due to unregulated commercial whaling, putting them at risk of extinction.. Prior to the setting up of the IWC in 1946, unregulated whaling had depleted a number of whale populations to a significant extent, and several whales species were severely endangered.