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- 1Bats may have first evolved in Transylvania 65 million years ago●Bats may have first evolved in Europe 65 million years ago, almost certainly in what would become the Transylvanian regi
New research suggests bats first evolved in Europe around 65 million years ago, with the earliest origins almost certainly in what is now the Transylvanian region of Romania. The finding challenges earlier assumptions that bats originated in North America or Asia, and is prompting discussion among palaeontologists about where and how flight first evolved in mammals.