by Christopher Hughes) Bat File 1 It has been inferred from fossils that the bat in its present shape had already appeared 50 million years ago, during the dawn of the mammals and millions of years before the earliest ancestor of mankind that has been discovered.
小檔案 1. 根據完整的化石推斷，蝙蝠以現有模樣出現至少已有五千萬年，在「哺乳類的黎明期」，比目前發現最早的人類祖先人猿，早上四千萬年。