The premise was that an intermediate form between a full flipper and a full leg would be useless. A seals front limbs are most certainly intermediate between a flipper and a leg, and it is not useless at all.
The premise was that an intermediate form between a full flipper and a full leg would be useless. A seals front limbs are most certainly intermediate between a flipper and a leg, and it is not useless at all.
Pretty useless when it comes to escaping polar bears on ice, breaking open shells or holding their young...
And lemme guess, now all we gotta do is wait millions of years to see what you’re seeing.
No, not useless. Just not adequate to do the perform the necessary functions as needed to insure the best chances for survival in either environment.