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The Paleozoic (/ ˌ p æ l i. ə ˈ z oʊ. ɪ k,-i. oʊ-, ˌ p eɪ-/ PAL-ee-ə-ZOH-ik, -ee-oh-, PAY-; [1] 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 Er
Homininaeid Era – Period prior to the existence of Homininae Homininid Era – Period prior to the existence of Hominini Prehistory – Period between the appearance of Homo ("humans"; first stone tools c. three million years ago) and the invention of writing systems (for the Ancient Near East : c. five thousand years ago).
These units are arranged in a hierarchy: eon, era, period, epoch, subepoch, age, and subage. [14] Geochronology is the scientific branch of geology that aims to determine the age of rocks, fossils, and sediments either through absolute (e.g., radiometric dating ) or relative means (e.g., stratigraphic position , paleomagnetism , stable isotope ...
era Archean ICS Plumb, 1991 Paleocene: 65.5 ± 0.3 55.8 ± 0.2 epoch Paleogene ICS oldest recent: Schimper, 1847 Paleophytic ~450 ~270 era paleobotany old flora: Paleogene: 65.5 ± 0.3 23.0 period Cenozoic ICS Hoernes, 1856 Paleoproterozoic: 2,500 1,600 era ICS Hofmann, 1987 Paleozoic: 542.0 ± 1.0 251.0 ± 0.7 era ICS old life: Sedwick, 1838 ...
c. 538.8 ± 0.6 Ma – beginning of the Cambrian Period, the Paleozoic Era and the current Phanerozoic Eon. End of the Ediacaran Period, the Proterozoic Eon and the Precambrian Supereon. The Ediacaran fauna disappears, while the Cambrian explosion initiates the emergence of most forms of complex life, including vertebrates ( fish ), arthropods ...
Altaid Orogeny – Paleozoic Era; Uralian orogeny – Long series of linear deformation and mountain building events that raised the Ural Mountains during the Permian Period; Cimmerian and Cathaysian orogenies Active through Triassic and Jurassic Periods along south and southeast Asia. Dabie-Sulu orogeny – Mesozoic Era
The Carboniferous (/ ˌ k ɑːr b ə ˈ n ɪ f ər ə s / KAR-bə-NIF-ər-əs) [6] is a geologic period and system of the Paleozoic era that spans 60 million years from the end of the Devonian Period 358.86 Ma (million years ago) to the beginning of the Permian Period, 298.9 Ma.
The Paleozoic era spanned roughly (Ma) [39] and is subdivided into six geologic periods: from oldest to youngest, they are the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian. Geologically, the Paleozoic starts shortly after the breakup of a supercontinent called Pannotia and at the end of a global ice age.