Oh another thing, now that I remember. They show that due to continental drift one part of alaska was way further south but that another part of it was more or less where it is today. So the coral stuff would be from the further south part but the part that was still there had the dinosaurs apparently. I hope you will be able to watch it.
The coral argument might work along with a shifting.... but if you go across the Arctic over to Coral Harbour.... and I know it doesnt look like much according to the maps... for the way they taper in.... but....Ellesmere Island is clear across the Canadian Arctic. What a person should do is go for a walk along Russias Arctic coast....and hunt for coral, sunglasses and swim suits. Dunno. Maybe there is other evidence. Maybee some beer bottles.
I’ll bet on the ocean there having equatorial temps, cuzz I have touched the coral in both places.