Crocodiles may have also adapted over time to deal with the changes in our atmosphere, while the dino DNA would not have gone through those changes. They could handwave that problem by saying they combined it with some other DNA or modified it themselves (better hemoglobin?)
Was curious so I tried to find historical Oxygen levels by century (didn’t find that). With the current oxygen level being around 20.9% and decreasing to effectively 17% around a mile in altitude, (say Denver) we adapt to 4% oxygen level without death. So if dinosaurs are similar in breathing to humans, I’d say with no scientific backing beyond just speculation, they should be fine.
Crocodiles may have also adapted over time to deal with the changes in our atmosphere, while the dino DNA would not have gone through those changes. They could handwave that problem by saying they combined it with some other DNA or modified it themselves (better hemoglobin?)
Was curious so I tried to find historical Oxygen levels by century (didn’t find that). With the current oxygen level being around 20.9% and decreasing to effectively 17% around a mile in altitude, (say Denver) we adapt to 4% oxygen level without death. So if dinosaurs are similar in breathing to humans, I’d say with no scientific backing beyond just speculation, they should be fine.