[SoldierDad]

"First: They represent the evolutionary link between the Invertebrate and Vertebrate Phyla since they have a primitive (cartilage) backbone. Second: A further common ancestor went on to become the sharks and rays, which eventually evolved into fish, amphibians, reptiles, mammals, primates, man."

And, once again, I ask, where is the evidentiary links which support the contention that different species of animals "evolved" from completely different earlier species of animals? The Zoology course I took in college certainly didn't provide such evidence, and noone on any of the threads from FR has either. The most that biologists have been able to say is that they "think" that is what happended, not "we know that is what happened".

[Ciexyz]

They specialized early and managed to survive. Impressive!

[DoctorMichael]

.........The Zoology course I took in college college certainly didn't provide........

You were cheated!

I'd ask for my money back.