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However, while the more ambitious 1.5 °C (2.7 °F) goal dramatically cuts the proportion of insects, plants, and vertebrates at high risk of extinction to 6%, 4% and 8%, the less ambitious target triples (to 18%) and doubles (8% and 16%) the proportion of respective species at risk. [15]
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 ...
Extinct vertebrates since 1500 (5 C) A. Extinct amphibians (2 C, 22 P) B. Extinct birds (10 C, 4 P) F. Extinct fish (3 C, 3 P) M. Extinct mammals (8 C, 14 P) R ...
Extinction of taxa is difficult to detect, as a long gap without a sighting is not definitive. Some mammals declared as extinct may very well reappear. [1] For example, a study found that 36% of purported mammalian extinction had been resolved, while the rest either had validity issues (insufficient evidence) or had been rediscovered. [3]
The Cretaceous–Paleogene (K–Pg) extinction event, [a] also known as the K–T extinction, [b] was the mass extinction of three-quarters of the plant and animal species on Earth [2] [3] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
The End Permian extinction or the "Great Dying" occurred at the Permian–Triassic transition. [13] It was the Phanerozoic Eon's largest extinction: 53% of marine families died, 84% of marine genera, about 81% of all marine species [14] and an estimated 70% of terrestrial vertebrate species. [15]
There is some debate over the severity of declining trends in the global mammal and the broader vertebrate population: while the Living Planet Report of the World Wide Fund for Nature reported a 68% decline in the aggregate wild vertebrate populations since 1970, [39] [40] [4] a scientific reanalysis of its data in Nature found that 98.6% of ...
Pterosaurs [b] [c] are an extinct clade of flying reptiles in the order Pterosauria. They existed during most of the Mesozoic: from the Late Triassic to the end of the Cretaceous (228 million to 66 million years ago). [8] Pterosaurs are the earliest vertebrates known to have evolved powered flight.