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Comparison with C. reticulata showed a calculated divergence time from mainland citrus between 2.2 and 2.8 million years ago, roughly corresponding to a Pleistocene era sea level rise that would have cut off the islands, providing the isolation necessary for speciation.
This was followed by the spread of citrus species into Taiwan and Japan in the Early Pliocene (5.33 to 3.6 mya), resulting in the tachibana orange (C. tachibana); and beyond the Wallace Line into Papua New Guinea and Australia during the Early Pleistocene (2.5 million to 800,000 years ago), where further speciation events created in the ...
In October 2023, published genetic research proved that the ancestor of the citrus plants originated in India more than 25 million years ago and evolved into the true citrus species in southern China 8 million years ago, followed by early citrus species such as pomelo and citron that originated in the foothills of the Himalayas. [4]
[31] [7] However, a directed study of these island cultivars revealed the existence of a second mandarin true-species that diverged from the mainland species between 2.2 and 2.8 million years ago, following the geographical isolation of the islands through rising sea levels.
The Miocene (/ ˈ m aɪ. ə s iː n,-oʊ-/ MY-ə-seen, -oh-) [6] [7] is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words μείων (meíōn, "less") and καινός (kainós, "new") [8] [9] and means "less recent" because it has 18% fewer modern marine invertebrates ...
End Ordovician: 440 million years ago, 86% of all species lost, including graptolites; Late Devonian: 375 million years ago, 75% of species lost, including most trilobites; End Permian, The Great Dying: 251 million years ago, 96% of species lost, including tabulate corals, and most trees and synapsids
Geraes claims that “Million Years Ago” plagiarises the music from his samba classic, “Mulheres” (Women), which was recorded and released by Brazilian singer Martinho da Vila in 1995.
The oldest dinosaur-bearing fossil assemblage, the Ischigualasto Formation of Argentina, has been radiometrically dated back to 230.3 to 231.4 million years ago. This age is very similar to the minimum age calculated for the CPE (≈230.9 million years ago).