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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.
Whales caught, by year and country Total whales caught since 1900, by species Total whales caught 2010–2014, by country. By 1900, bowhead, gray, and right whales were nearly extinct, and whaling had declined. It revived with the invention of harpoons shot from cannons, explosive tips and factory ships, which allowed distant whaling.
Other whale species, however (in particular the common minke whale) have never been considered endangered. Opponents of whaling argue that a return to full-scale commercial whaling will lead to economic concerns overriding those of conservation, and there is a continuing debate as to how to describe the current state of each species. [11]
As many whales begin to leave their protected zones in search of warmer waters, boats should take extra precautions. The post The Latest Whale Species Facing Extinction and What’s NOT Being Done ...
Once relentlessly hunted for their products, whales are now protected by international law. The North Atlantic right whales nearly became extinct in the twentieth century, with a population low of 450, and the North Pacific grey whale population is ranked Critically Endangered by the IUCN. Besides the threat from whalers, they also face threats ...
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]
Protocetus atavus ("first whale") is an extinct species of primitive cetacean from Egypt.It lived during the middle Eocene period 45 million years ago. The first discovered protocetid, Protocetus atavus was described by Fraas 1904 based on a cranium and a number of associated vertebrae and ribs found in middle Lutetian Tethyan marine limestone from Gebel Mokattam near Cairo, Egypt.
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.