siti
Well-Known Member
Sorry to be the one to break the bad news to you, but you are part fish...or at least there is something very fishy about your body plan...the idea that a fish transitions into a reptile there is still no evidence apart from sketchy comparison between fossils.
Take the recurrent laryngeal nerve for example...it takes a seemingly unnecessarily circuitous route from the brain, down into the chest, looping around the aorta and then back up to the larynx to control swallowing and speech. It follows the same path - which is respectively much shorter or longer in everything from fish to giraffes. The pattern makes perfect sense if you're fish-like and your brain, heart and larynx are all close together at one end of your body but not so much if you're a giraffe and the nerve has to detour 15 feet down your neck and then back up again (Mind you big dinosaurs would have had an even longer RLN). A wise designer would, of course, have made different pathways for this nerve to suit the body shape of fish, reptiles and mammals respectively. Evolution can't do that...the nerve has to stay connected in the embryos of all succeeding generations of offspring in order to function. So through the course of evolution from the common ancestors of fish, reptiles and mammals, the neurons of the RLN just got longer or shorter as required to make up the distance necessary for the detour.
Anyway, this is but one example...the reality is, we all carry the evidence of evolution around with us in our cells and in our bodies. We ourselves are "intermediate" and "links" in the process of evolution...and so is every other living organism. We are living fossils - which is much easier to believe about some RFers than others.