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The Paleogene Period (IPA: / ˈ p eɪ l i. ə dʒ iː n,-l i. oʊ-, ˈ p æ l i-/ PAY-lee-ə-jeen, -lee-oh-, PAL-ee-; also spelled Palaeogene or Palæogene) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period 66 Ma (million years ago) to the beginning of the Neogene Period 23.04 Ma.
The euplotid nuclear code; The bacterial, archaeal and plant plastid code; The alternative yeast nuclear code; The ascidian mitochondrial code; The alternative flatworm mitochondrial code; The Blepharisma nuclear code [4] The chlorophycean mitochondrial code (none) (none) (none) (none) The trematode mitochondrial code; The Scenedesmus obliquus ...
Download QR code; Print/export Download as PDF; Printable version; In other projects ... This category contains events which happened in the Paleogene, ...
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Paleogenetics is the study of the past through the examination of preserved genetic material from the remains of ancient organisms. [1] [2] Emile Zuckerkandl and Linus Pauling introduced the term in 1963, long before the sequencing of DNA, in reference to the possible reconstruction of the corresponding polypeptide sequences of past organisms. [3]
The Thanetian Stage is coeval the lower Neustrian European land mammal age (it spans the Mammal Paleogene zone 6 and part of zones 1 through 5. [7]), the upper Tiffanian and Clarkforkian North American land mammal ages, the Riochican and part of the Itaboraian South American land mammal ages and the upper Nongshanian and Gashatan Asian land ...
In biostratigraphy, the Priabonian Stage is coeval with the Chadronian North American Land Mammal Age, the Headonian European Land Mammal Mega Zone (in more detail: with the Mammal Paleogene zones 17A through 20 [8]), parts of the Barrancan and Mustersan South American Land Mammal Ages and the Ulangochuian and Ergilian Asian Land Mammal Ages.
In 1978, the Paleogene was officially defined as the Paleocene, Eocene, and Oligocene Epochs; and the Neogene as the Miocene and Pliocene Epochs. [12] In 1989, Tertiary and Quaternary were removed from the time scale due to the arbitrary nature of their boundary, but Quaternary was reinstated in 2009.