That each creative day was 7,000 years long. I think they are backing away from this now, but really. This did not account for dinosaurs or even mammoths, etc. If this were true, all life on the earth would only be about 50,000 years old.
Also, that no animal ate meat before the flood. As one poster mentioned, fossils have been found with teeth embedded in them, and some have been found together because they killed each other.