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Most vertibrate life on earth follows a 4 limb body plan (in this instance, the wings are two limbs and the legs are the other two). There are a number of mythical creatures with 6 limbs; Pegasus, ...
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2021-03-30T23:53:19Z (over 3 years ago)
Source: https://worldbuilding.stackexchange.com/a/103286 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/