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==Use==
==Use==
Instead of "trilobites went extinct 251 million years ago" <ref>http://www.trilobites.info/lasttrilos.htm</ref>, one would write "trilobites went extinct 251 Ma". The use of "Ma" avoids word repeats when writing papers.
Instead of "trilobites went extinct 251 million years ago" <ref>http://www.trilobites.info/lasttrilos.htm</ref>, one would write "trilobites went extinct 251 Ma". The use of "Ma" avoids word repeats when writing papers.
[[Category:Terms]]