Myr - Simple English Wikipedia, the free encyclopedia

In writing about prehistory, years are often grouped together in units of one million. Million years ago or megaannum may be abbreviated as mya, myr or Ma.^[1]

References

↑ Alden, Andrew (2019-08-17). "How to Abbreviate Millions of Years Old". Retrieved 2022-08-28.

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[thoughtco-1] Alden, Andrew (2019-08-17). "How to Abbreviate Millions of Years Old". Retrieved 2022-08-28.

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