John Phillips (geologist) in the context of "Paleozoic"

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⭐ Core Definition: John Phillips (geologist)

John Phillips FRS (25 December 1800 – 24 April 1874) was an English geologist. In 1841 he published the first global geologic time scale based on the correlation of fossils in rock strata, thereby helping to standardize terminology including the term Mesozoic, which he invented.

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👉 John Phillips (geologist) in the context of Paleozoic

The Paleozoic (/ˌpæli.əˈz.ɪk, -i.-, ˌp-/ PAL-ee-ə-ZOH-ik, -⁠ee-oh-, PAY-; or Palaeozoic) Era is the first of three geological eras of the Phanerozoic Eon. Beginning 538.8 million years ago (Ma), it succeeds the Neoproterozoic (the last era of the Proterozoic Eon) and ends 251.9 Ma at the start of the Mesozoic Era. The Paleozoic is subdivided into six geologic periods, (from oldest to youngest) Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian. Some geological timescales divide the Paleozoic informally into early and late sub-eras: the Early Paleozoic consisting of the Cambrian, Ordovician and Silurian; the Late Paleozoic consisting of the Devonian, Carboniferous and Permian.

The name Paleozoic was first used by Adam Sedgwick (1785–1873) in 1838 to describe the Cambrian and Ordovician periods. It was redefined by John Phillips (1800–1874) in 1840 to cover the Cambrian to Permian periods. It is derived from the Greek palaiós (παλαιός, "old") and zōḗ (ζωή, "life") meaning "ancient life".

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