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mya (unit)
From Wikipedia, the free encyclopedia
In astronomy, geology, and paleontology, mya or "m.y.a." is an abbreviation for "million years ago". Like the related unit bya, mya is traditionally written in lowercase.
Although mya is common in popular science writing; in professional literature Ma (megaannum) is preferred.
Contents |
- The light we see now from the Andromeda Galaxy started 2.5 mya
- Pliocene 5.3 to 1.8 mya
- The last geomagnetic reversal was 0.78 mya
- The (Eemian interglacial) Ice Age started 0.13 mya
- Holocene started 0.01 mya
- Homo erectus existed from 1.8 to 0.07 mya
- Homo sapiens separated from Neanderthal lineage 0.6 mya
- and emerged out of Africa from 0.076 mya
- and entered Australasia from 0.07 mya
- and colonized all of Eurasia 0.04 mya
- and formed cultures since the Upper Paleolithic Revolution 0.04 mya