Why is it the least likely?
because evolutionists hold firmly to their belief that the creature is 80mil years old?
Thats a strong faith!
Faith, as always, has nothing to do with it.
Let me give you an analogy: you've got a 1000 reliable witnesses to an event, 999 of them say one thing, the 1000th tells you something that
appears to contradict them. Do you think the most rational thing to do is to consider that:
a) the 999 other witness are wrong?
b) there is an explaination as to what the 1000th appears to contradict?
You, apparently, think that a) is the way forward. I think that b) is the rational choice.