Recent excavations and research indicate that several species of dinosaurs roamed further north than previously suspected: some even came close to the Arctic regions.
Now, unless they were warm-blooded or covered with some kind of protective coat (feathers? possibly even real fur?), how could they have survived the severe winters? Even considering that the polar, sub-polar and Arctic regions were somewhat milder in climate than they are today, winters would still probably have been snowy, chilly to say the least. Dinosaurs who lived in such regions must have experienced evolutionary development which would have enabled them to endure harsher climates. But do we have any material evidence of such evolutionary modification?
I am wondering if the dinos of the far north might have used caverns or thermal cavities in the earth for the purposes of hibernation.
Now, unless they were warm-blooded or covered with some kind of protective coat (feathers? possibly even real fur?), how could they have survived the severe winters? Even considering that the polar, sub-polar and Arctic regions were somewhat milder in climate than they are today, winters would still probably have been snowy, chilly to say the least. Dinosaurs who lived in such regions must have experienced evolutionary development which would have enabled them to endure harsher climates. But do we have any material evidence of such evolutionary modification?
I am wondering if the dinos of the far north might have used caverns or thermal cavities in the earth for the purposes of hibernation.