I know you might know this but do not click the link that the other person sent, it could lead to a site with viruses/inappropriate content/etc.
The answer is most of the day in the sunlight, I know this because if you think about the other ones they just don’t make since for this environment. Being covered with fur in a hot environment would not be suitable. Storing water internally would be nice for a desert but there is most likely lakes so that wouldn’t be too useful. And hibernating for long periods time, once again, does not really matter because there are many animals in different climates that hibernate so not knowing the animal we can’t say for sure that it would be.
I hope this helps! <3
It provides the approx. time that the organism was alive by comparing them to index fossils.