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Million years ago, abbreviated as Mya, Myr (megayear) or Ma (megaannum), is a unit of time equal to 1,000,000 years (i.e. 1 ...
Approximate extent of the Karoo Glaciation (in blue), over the Gondwana supercontinent during the Carboniferous and Permian periods. The late Paleozoic icehouse, also known as the Late Paleozoic Ice Age (LPIA) and formerly known as the Karoo ice age, was an ice age that began in the Late Devonian and ended in the Late Permian, [1] occurring from 360 to 255 million years ago (Mya), [2] [3] and ...
1600 Mya – 2500 Mya: all GSSA points Eras in the Archean Eon 2500 Mya – years > 3600 Mya rocks older than 2.5 Billion years – rocks older than 3.6 Billion years [1] [2] Neoarchean: 2500 Mya – 2800 Mya (only GSSA points) Mesoarchean: 2800 Mya – 3200 Mya: Paleoarchean: 3200 Mya – 3600 Mya: Eoarchean: 3600 Mya – 4000 Mya: Earth's ...
The Stenian Period (/ ˈ s t iː n i. ə n / STEE-nee-ən, from Ancient Greek: στενός, romanized: stenós, meaning "narrow") is the final geologic period in the Mesoproterozoic Era and lasted from 1200 Mya to 1000 Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically.
The oldest P. boisei remains date to about 2.3 mya from Malema. [30] The youngest record of P. boisei comes Olduvai Gorge (OH 80) about 1.34 mya; [19] however, due a large gap in the hominin fossil record, P. boisei may have persisted until 1 mya. [15]: 109 P. boisei changed remarkably little over its nearly one-million-year existence. [32]
weeks to years (1 Ms = 11 d 13 h 46 min 40 s = 1,000,000 s) 1.6416 Ms (19 d): The length of a month of the Baha'i calendar. 2.36 Ms (27.32 d): The length of the true month, the orbital period of the Moon 2.4192 Ms (28 d): The length of February, the shortest month of the Gregorian calendar, in common years 2.5056 Ms (29 d): The length of ...
The Jurassic (/ dʒ ʊ ˈ r æ s ɪ k / juurr-ASS-ik [2]) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period 201.4 million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya.
Lengths are given in divine years (a.k.a. celestial or Deva years), where a divine year lasts for 360 solar (human) years. A chatur-yuga lasts for 4.32 million solar (12,000 divine) years with 1,728,000 years of Krita-yuga , 1,296,000 years of Treta-yuga , 864,000 years of Dvapara-yuga , and 432,000 years of Kali-yuga .