Bya vs. Mya — What's the Difference?
Difference Between Bya and Mya
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Bya
Bya or b.y.a. is an abbreviation for "billion years ago".
Mya
Init of million years ago
Bya
Abbreviation of billion years ago(Preceded by a numeral.)
Mya
A genus of bivalve mollusks, including the common long, or soft-shelled, clam.
Mya
Type genus of the family Myacidae
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