IMHO they're not indicative of cut-marks. Suggestive? Perhaps. But when my cat was a kitten and got excited about a squirrel outside the window behind me, she scratched me in her haste to climb over me to get to the window. The scratches were in smooth straight lines, like in the images of the article.
Look at how perfectly parallel most of the lines are in the images. Does that look like multiple strikes from a person using a cutting tool, or more like single strike attacks from something with multiple sharp edges (i.e. teeth from one bite or one paw-strike with multiple claws)?
Even when I'm using a knife at a cutting board, my cuts aren't as parallel to each other as the ones in images A, C, and D. (Of course, maybe I'm not as good at it as my wife. LOL) Those lines in the images are so perfectly in line with each other that to me they look more like a scratch from a modern dog or cat (or some prehistoric animal with a paw or talon containing multiple claws). Of course, since these are bones I'd lean more towards scars from a bite with the prey doing a pulling motion to escape the bite (or the predator biting with a tearing motion to tear meat off of the bone). These perfectly parallel lines just don't look to me like a single point object striking the bone multiple times (which would make unparallel lines).
