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The extinction symbol with an X-shaped pictogram of an hourglass.The letter X stands for the first syllable of the word "extinction" Flag with the extinction symbol. The extinction symbol represents the threat of holocene extinction on Earth; a circle represents the planet and a stylised hourglass is a warning that time is running out for many species.
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: Formation of the Karoo-Ferrar Igneous Provinces [17] Triassic: Triassic–Jurassic extinction ...
Extinction is the termination of a taxon by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively.
Also spoken in: Vietnam: hnu Juk language: Definitely endangered [1] Kri language: Severely endangered [1] aem Maleng language: Definitely endangered [1] pkt May language: Definitely endangered [1] Also spoken in: Vietnam: scb Mlabri language: Definitely endangered [1] Also spoken in: Thailand: mra Mok language: Definitely endangered [1] tlq O ...
Vietnam [179] [180] 1954: Central Kalapuya: Kalapuyan: Oregon, United States: with the death of John B. Hudson [160] 1954: Ifo: Austronesian: Erromanga Island, Vanuatu: with the death of James Nalig [181] 1952: Martha's Vineyard Sign Language: Sign language: Massachusetts, United States: with the death of Katie West 1951: Alsea dialect: Isolate ...
Abridged Chronicles of Đại Việt) or Việt sử lược (chữ Hán: 越史略; lit. Abridged Chronicles of Viet ) is an historical text that was compiled during the Trần dynasty . The three-book work was finished around 1377 and covers the history of Vietnam from the reign of Triệu Đà to the collapse of the Lý dynasty . [ 1 ]
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]
Permian–Triassic boundary at Frazer Beach in New South Wales, with the End Permian extinction event located just above the coal layer [2]. Approximately 251.9 million years ago, the Permian–Triassic (P–T, P–Tr) extinction event (PTME; also known as the Late Permian extinction event, [3] the Latest Permian extinction event, [4] the End-Permian extinction event, [5] [6] and colloquially ...