[VadeRetro]

That is a copout. I want to see the half-bird, half-reptile and I want to see it now.

Broomstick demanded; broomstick brought.

I also want to see the half-amphibian and half-mammal.">

Take your pick from this progression:

Pick one and Google it. Here's a web page on Thrinaxodon for starters but have a ball.

Or fish-reptile-mammal-bird whatever.

A mammal-bird transitional would be a disproof of evolution. (Evolution is actually falsifiable but hasn't been falsified! Can your theory say that?) Guess what? We don't have any of those.

[keithtoo]

I wouldn't hang my hat on Archaeopteryx if I were you.

This is an example of the wishful thinking and confirmation of prejudices scenario. Archaeopteryx is either a fraud (probably) or a bird, not a reptile-bird.