MVP
Well-Known Member
I guess size doesn't matter to you, if Dophin peni are equivalent to whale peni in your mind, but really they both use their pelvic girdles to support their sexual reproductive system.
Because I think labeling the bones that make up the pelvic girdle "tibia" and "femur" is ridiculous if they don't serve that function.
They do not use it to support it. Most of mammal penises are attached to the same structures, there is nothing unique about whale or dolphins penis attachment, if anything it proves common ancestor.
There are numerous bones which do not serve that function anymore yet they are named that way - think human tailbone, is that offensive or ridiculous to you? Plus whale tibia and femur are not part of pelvis whatsoever, you getting confused here. There are vestigial bones. Ones which got smaller in size as they are no longer needed. But that does not make them part of the pelvis.