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MEGAYEAR [1 record]

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Record 1 2022-06-30

English

Subject field(s)
  • Metrology and Units of Measure
  • Chronology
  • Petrography
CONT

Earth's history from 543 million years (Ma) ago to today—the Phanerozoic Eon—is divided into three great eras: Paleozoic, Mesozoic, and Cenozoic.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Chronologie
  • Pétrographie
CONT

Le million d'années (Ma) et le millier d'années (Ka) sont des unités de temps couramment utilisées dans les sciences de la Terre.

Spanish

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