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๐™ด๐š–๐šŠ๐š—๐š˜๐š—

3 billion years back in time
41ํŒ”๋กœ์ž‰87ํŒ”๋กœ์›Œ1.83k์ข‹์•„์š” ์ˆ˜
์ž‘ํ’ˆ์ฆ๊ฒจ์ฐพ๊ธฐ
์ด์ „๋‹ค์Œ