First off, the Denisovan people were named after the Denisova cave, not the other way around. Second, until very recently (in the last year or so) we did not have any intact bones confirmed to be Denisovan that are large enough to say anything about their morphology (the recent classification of some jaw bones as Denisovan is based on protein sequences, which are more stable than DNA). I’m skeptical of this article given the facts that I know that they got wrong and the lack of any evidence describing why the particular piece couldn’t have been made by some other Homo.