Pretty much dead, as nearly as I could tell on first glance. Though I do not really know for sure, my guess would be a shrew, a lady shrew and someone's mummy.

Sorry for the poor humor. Truth is I was petrified when I first saw the poor thing. Of course, a dead shrew in the bottom bracket is so much better than a black bear chasing one's bottom (and that has happened, sort of, also - no pictures of that incident!).