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The Evolution of Leschmania Shagasai
The genus probably evolved in the Mesozoic era, so like 252 to 66 million years ago. Leschmania Shagasai is now thought to be synonymous with Leschmania and Phantom. There may have also been some bearing land bridge crossing by some rodent host during the Eocene that led to subgenous Leschmania being brought to the knee arctic from Asia.