rationalskepticism.org

asyncritus wrote:

Oldskeptic wrote:I think that it is worth pointing out that amphibians have genes for both gills and lungs. Gills in the juvenile stage and lungs in the adult stage. They lay their eggs in fresh water where the juveniles hatch and swim around using gills, fins, and tails like fish, but later lose their tails, gills, and fins and grow legs, arms and, lungs, and a lot of them spend a lot of time out of the water.

Some amphibians even retain their gills into the adult stage after growing arms and legs.

Evolution in action right before your eyes? I think so!

I don't know who posted these pics of mudskippers, but you clearly have no idea of the biology of these fish, or of their ancestry, or you wouldn't even think that they are some kind of 'transitionals' between fish and tetrapods.

For a start, they don't have legs or lungs.

They breathe through their skin - and if you can believe that skin is a prototype lung then you're in a pretty bad way.

Second, have you ever looked at the anatomy of a fin as compared to a tetrapod forelimb? I doubt it somehow, or you wouldn't be putting up this tripe. I could use stronger (or worse) language, but you get the general idea, I'm sure.

So here are a couple of nice pictures for you to ruminate upon, and puke:



Here's a coelacanth pectoral fin:



And here are some tetrapod forelimbs:



Haven't you got to be on mushrooms to say they're connected?

But you have avoided the question that's at the root both of your troubles and your willingness to post this tripe.

That question is:

Granted that a fish of some sort moved on to land and became an amphibian or a reptile of some kind,
where did it get the powering instincts to enable it to a.walk and b.breathe with lungs?

Never mind the question where did the lungs come from, and why. That's too tough for an evolutionist fairy-tale spinner. Answer those 2 questions above, and I'll recommend you for a Nobel.

PS BTW, have you ever noticed that the pelvic fins of fishes are almost invariably SMALLER (or maybe just the same size) than the pectorals?

And have you noticed that the hind limbs of tetrapods are invariably LARGER than their forelimbs? (think of a kangaroo, for instance as an extreme example). Now how did that happen?