Dinosaurs 4500 years ago

I think I can answer your questions.
There are no dinosaurs above the k-t line because this line represents the flood.
thier was a switch of roles. Befofr the flood mammals were restricted or small and after the flood dinosaurs were resticted in thier area.
Then sometime after they just died out as often happens in the animal kingdom.Indeed the flood event and continent upheavel was the process for fossilization. It was unique and after the flood fossilization only happened here and there usually do too localized volcanoes.
The mammoths were post flood and couldn't be fossilized like creatures in the flood event. also the continents were separated and the weather was different. There was no polar regions in pre-flood days.
It is an error to think dinosaurs were in a arctic envirorment or even the present latitue that the arcticts are now in.Also dinosaurs is just a human word to classify creatures and not an actual animal distinction. Crocs and turtles and other lizards are dino's also in any sense.
Regards

Actually the word dinosaur was just a word to describe large creatures found in the 1800's that they also concluded were lizards. In our times this defination didn't work so they changed it to be more specific. Then they changed it again and have argued about it since. Croc's and turtles are the same creatures as dinosaurs. The present distinction is just to keep some credibility to thier being another kind of creatures.

It is simple creationist reasoning to understand before the flood it was a non-raining dry warm world everywhere. Also it is accepted that that continental drift took place. Except we creationistsw would call it continental red eye.
There have not been hundreds of thousands of geologists. In fact very few historical geologists have ever been pain 9 to 5. These are very small circles and few men have seriously put thier minds to these matters. They,like you, simply rely on authority for thier conclusions about these matters. Not independent thought.

The Bible is the guide but if there is a critism then we can reson thru the answer. Thats all our opponents do to say the Bible is a false witness. Mike all things can be answered by what we know now or by, if nessesary, a little faith.
However the flood is a cornerstone of Scripture and thus evangelical Christianity. And it has been seen that way by the great majority of us in the past and the present. We've never been proven wrong about anything and the English-speaking world is a product of our striving. Puritan (our old name) and Evangelical thought has advanced the world for it is rooted in the faith the Bible is true. And so the Bible has the better ideas for society.
Regards

Creationists accept, as is the history of the English-speaking people, the most intelligent people, the Bible has a legitamate source of truth of origins. And then we take on all comers who say it isn't. I challenge evolution and am not bound by its private club rules for proving ones assertion.Also only a few geologists ever make new ideas mostly everyone just repeats what they read in books.