Complex sentence: The remaining seven of these exhibited signs of cannibalism including defleshing, fragmentation of long bones to extract marrow, chopped, cut, and blackened bones, and a stone tool kit appropriate for butchering a mid-sized mammal was found.
Split into simpler sentences: The remaining seven exhibited many signs of cannibalism including defleshing, fragmentation of long bones to extract marrow, chopped, cut, and blackened bones. A stone tool kit appropriate for butchering a mid-sized mammal was found.