Ah! You want too much for the nature of my hint-dropping. You're too used to being mystical. Even I didn't get your typically veiled and murky point. Can you help yourself?
Tribune7 needed help getting off of the "Dino = reptile / Reptiles don't have teats" thing. The evolutionary logic is more complicated, but he didn't have his evo hat on. I had to clutter his radar a bit to get him out of the rut. There are facts to consider which he simply was leaving out. Yes, the clues were selective. It's a game.
I won't leave him beguiled forever. Besides, I laid it out much straighter for No-Kin and anyone else reading the thread. There is still no response.
Consider your smoke-and-mirrors. Do you intend the confusion you sow to be temporary or permanent?
Maybe because for someone to use your deductive reasoning you must provide them all of the relevant logical statements. I do not see T. Rex let alone dinosaur mentioned in the statements.
What is that line of evolutionary reasoning? You may use any of the following and anything else you wish:
1) Reptiles have no mammary glands.
2) Mammals have mammary glands.
3) Mammals arose from a line of reptiles.
4) Birds arose from a line of reptiles.
5) Birds have no mammary glands.
It is relevant only if evolutionary logic is logical.