Good Paleoclimate Resources?

Hello everyone! I'd like to do some research for one of my kintypes, but to do so I need to find some good free resources on paleoclimates to do so. I can't find many things just with Google. I'd especially like any resources that talk about different regions and biomes in the late Cretaceous (bonus if fauna is also discussed). Technical language and scientific jargon is fine, I have a background in geology and archaeology involving paleoclimate, so I can muddle through paleontology resources okay. If anyone can help I would be very grateful. :)