• Tlaloc_Temporal@lemmy.caEnglish
        1·
        57 minutes ago

        I think most if not all tetrapods should have the 1-2-3-4-5 hierarchy for their arms and legs (although the later branches often fuse together).

        I just checked, and mice have the 1-2 pattern for front and hind limbs. It’s just the arms that are weird, but this mouse’s arms have always been weird.

        Edit: I just saw the legs again, those are definitely screwed up too.